[arm64] disable snmp's parallel make (#6592)

snmpd's compile is always failed with file truncated on ARM64 arch, the error log is like "/usr/bin/ld: mibgroup/ip-forward-mib/inetCidrRouteTable/.libs/inetCidrRouteTable_interface.o: file not recognized: file truncated"

Co-authored-by: Xianghong Gu <xgu@centecnetworks.com>

src/snmpd/Makefile

@@ -29,7 +29,11 @@ $(addprefix $(DEST)/, $(MAIN_TARGET)): $(DEST)/% :
 	stg init
 	stg import -s ../patch-$(SNMPD_VERSION)/series
 
+ifeq ($(CONFIGURED_ARCH), arm64)
+	dpkg-buildpackage -rfakeroot -b -d -us -uc -j1 --admindir $(SONIC_DPKG_ADMINDIR)
+else
 	dpkg-buildpackage -rfakeroot -b -d -us -uc -j$(SONIC_CONFIG_MAKE_JOBS) --admindir $(SONIC_DPKG_ADMINDIR)
+endif
 	popd
 
 	mv $(DERIVED_TARGETS) $* $(DEST)/