s390: add alignment hints to vector load and store

The z14 introduced alignment hints to increase the performance of
vector loads and stores. The kernel uses an implicit alignmenet
of 8 bytes for the vector registers, set the alignment hint to 3.

Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

arch/s390/include/asm/vx-insn.h

@@ -363,23 +363,23 @@
 .endm
 
 /* VECTOR LOAD MULTIPLE */
-.macro VLM vfrom, vto, disp, base
+.macro VLM vfrom, vto, disp, base, hint=3
  VX_NUM v1, \vfrom
  VX_NUM v3, \vto
  GR_NUM b2, \base /* Base register */
  .word 0xE700 | ((v1&15) << 4) | (v3&15)
  .word (b2 << 12) | (\disp)
- MRXBOPC 0, 0x36, v1, v3
+ MRXBOPC \hint, 0x36, v1, v3
 .endm
 
 /* VECTOR STORE MULTIPLE */
-.macro VSTM vfrom, vto, disp, base
+.macro VSTM vfrom, vto, disp, base, hint=3
  VX_NUM v1, \vfrom
  VX_NUM v3, \vto
  GR_NUM b2, \base /* Base register */
  .word 0xE700 | ((v1&15) << 4) | (v3&15)
  .word (b2 << 12) | (\disp)
- MRXBOPC 0, 0x3E, v1, v3
+ MRXBOPC \hint, 0x3E, v1, v3
 .endm
 
 /* VECTOR PERMUTE */