fixup! [AArch64][llvm] Armv9.7-A: Add support for Memory Partitioning and Management (FEAT_MPAMv2)

Add extra diagnostic tests and fix test args

Author: jthackray

llvm/test/MC/AArch64/armv9.7a-mpamv2-diagnostics.s

@@ -7,3 +7,12 @@
 
 mlbi alle1, x30
 // CHECK-ERROR: error: specified mlbi op does not use a register
+
+mlbi vmalle1, x30
+// CHECK-ERROR: error: specified mlbi op does not use a register
+
+mlbi vpide1
+// CHECK-ERROR: error: specified mlbi op requires a register
+
+mlbi vpmge1
+// CHECK-ERROR: error: specified mlbi op requires a register

llvm/test/MC/AArch64/armv9.7a-mpamv2.s

@@ -2,9 +2,9 @@
 // RUN:        | FileCheck %s --check-prefixes=CHECK-ENCODING,CHECK-INST
 // RUN: not llvm-mc -triple=aarch64 -show-encoding < %s 2>&1 \
 // RUN:        | FileCheck %s --check-prefix=CHECK-ERROR
-// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+all < %s \
+// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+mpamv2 < %s \
 // RUN:        | llvm-objdump -d --mattr=+mpamv2 --no-print-imm-hex - | FileCheck %s --check-prefix=CHECK-INST
-// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+all < %s \
+// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+mpamv2 < %s \
 // RUN:        | llvm-objdump -d --mattr=-mpamv2 --no-print-imm-hex - | FileCheck %s --check-prefix=CHECK-UNKNOWN
 // Disassemble encoding and check the re-encoding (-show-encoding) matches.
 // RUN: llvm-mc -triple=aarch64 -show-encoding -mattr=+mpamv2 < %s \