Maintainers.txt: update Leif's email address

Qualcomm is (finally) migrating its email infrastructure for open source
developers. Update Maintainers.txt (and .mailmap) to reflect.
Github username remains unchanged.

Signed-off-by: Leif Lindholm <quic_llindhol@quicinc.com>

.mailmap

@@ -38,6 +38,7 @@ Jim Dailey <Jim.Dailey@Dell.com>
 Jim Dailey <Jim.Dailey@Dell.com> <Jim_Dailey@Dell.com>
 Laszlo Ersek <lersek@redhat.com> <lersek@6f19259b-4bc3-4df7-8a09-765794883524>
 Laszlo Ersek <lersek@redhat.com> <lersek@Edk2>
+Leif Lindholm <leif.lindholm@oss.qualcomm.com> <quic_llindhol@quicinc.com>
 Liming Gao <gaoliming@byosoft.com.cn>
 Liming Gao <liming.gao@intel.com> <Gao, Liming liming.gao@intel.com>
 Liming Gao <liming.gao@intel.com> <lgao4@6f19259b-4bc3-4df7-8a09-765794883524>

Maintainers.txt

@@ -67,7 +67,7 @@ Tianocore Stewards
 ------------------
 F: *
 M: Andrew Fish <afish@apple.com> [ajfish]
-M: Leif Lindholm <quic_llindhol@quicinc.com> [leiflindholm]
+M: Leif Lindholm <leif.lindholm@oss.qualcomm.com> [leiflindholm]
 M: Michael D Kinney <michael.d.kinney@intel.com> [mdkinney]
 
 Responsible Disclosure, Reporting Security Issues
@@ -84,7 +84,7 @@ EDK II Architectures:
 ARM, AARCH64
 F: */AArch64/
 F: */Arm/
-M: Leif Lindholm <quic_llindhol@quicinc.com> [leiflindholm]
+M: Leif Lindholm <leif.lindholm@oss.qualcomm.com> [leiflindholm]
 M: Ard Biesheuvel <ardb+tianocore@kernel.org> [ardbiesheuvel]
 M: Sami Mujawar <sami.mujawar@arm.com> [samimujawar]
 
@@ -137,14 +137,14 @@ EDK II Packages:
 ArmPkg
 F: ArmPkg/
 W: https://github.com/tianocore/tianocore.github.io/wiki/ArmPkg
-M: Leif Lindholm <quic_llindhol@quicinc.com> [leiflindholm]
+M: Leif Lindholm <leif.lindholm@oss.qualcomm.com> [leiflindholm]
 M: Ard Biesheuvel <ardb+tianocore@kernel.org> [ardbiesheuvel]
 M: Sami Mujawar <sami.mujawar@arm.com> [samimujawar]
 
 ArmPlatformPkg
 F: ArmPlatformPkg/
 W: https://github.com/tianocore/tianocore.github.io/wiki/ArmPlatformPkg
-M: Leif Lindholm <quic_llindhol@quicinc.com> [leiflindholm]
+M: Leif Lindholm <leif.lindholm@oss.qualcomm.com> [leiflindholm]
 M: Ard Biesheuvel <ardb+tianocore@kernel.org> [ardbiesheuvel]
 M: Sami Mujawar <sami.mujawar@arm.com> [samimujawar]
 
@@ -153,7 +153,7 @@ F: ArmVirtPkg/
 W: https://github.com/tianocore/tianocore.github.io/wiki/ArmVirtPkg
 M: Ard Biesheuvel <ardb+tianocore@kernel.org> [ardbiesheuvel]
 M: Sami Mujawar <sami.mujawar@arm.com> [samimujawar]
-R: Leif Lindholm <quic_llindhol@quicinc.com> [leiflindholm]
+R: Leif Lindholm <leif.lindholm@oss.qualcomm.com> [leiflindholm]
 R: Gerd Hoffmann <kraxel@redhat.com> [kraxel]
 
 BaseTools
@@ -186,7 +186,7 @@ M: Pierre Gondois <pierre.gondois@arm.com> [pierregondois]
 EmbeddedPkg
 F: EmbeddedPkg/
 W: https://github.com/tianocore/tianocore.github.io/wiki/EmbeddedPkg
-M: Leif Lindholm <quic_llindhol@quicinc.com> [leiflindholm]
+M: Leif Lindholm <leif.lindholm@oss.qualcomm.com> [leiflindholm]
 M: Ard Biesheuvel <ardb+tianocore@kernel.org> [ardbiesheuvel]
 M: Abner Chang <abner.chang@amd.com> [changab]
 
@@ -413,7 +413,7 @@ MdePkg: FDT related library instance
 F: MdePkg/Library/BaseFdtLib/*
 F: MdePkg/Include/Library/FdtLib.h
 M: Benny Lin <benny.lin@intel.com> [Benny3345678]
-M: Leif Lindholm <quic_llindhol@quicinc.com> [leiflindholm]
+M: Leif Lindholm <leif.lindholm@oss.qualcomm.com> [leiflindholm]
 R: Gua Guo <gua.guo@intel.com> [gguo11837463]
 R: Chasel Chiu <chasel.chiu@intel.com> [ChaselChiu]
 R: James Lu <james.lu@intel.com> [jameslu8]
@@ -434,7 +434,7 @@ R: Brit Chesley <brit.chesley@amd.com> [BritChesley]
 
 MdePkg: ARM/AARCH64 standard interfaces
 F: MdePkg/Include/Library/ArmLib.h
-M: Leif Lindholm <quic_llindhol@quicinc.com> [leiflindholm]
+M: Leif Lindholm <leif.lindholm@oss.qualcomm.com> [leiflindholm]
 M: Ard Biesheuvel <ardb+tianocore@kernel.org> [ardbiesheuvel]
 M: Sami Mujawar <sami.mujawar@arm.com> [samimujawar]
 
@@ -497,7 +497,7 @@ R: Michael Roth <michael.roth@amd.com> [mdroth]
 
 OvmfPkg: FDT related modules
 F: OvmfPkg/Fdt
-R: Leif Lindholm <quic_llindhol@quicinc.com> [leiflindholm]
+R: Leif Lindholm <leif.lindholm@oss.qualcomm.com> [leiflindholm]
 R: Gerd Hoffmann <kraxel@redhat.com> [kraxel]
 R: Abner Chang <abner.chang@amd.com> [changab]