[OpenMP][AArch64] Fix frame pointer save in microtask

When OMPT is enabled, the stack pointer was not saved to frame pointer
register immediately after storing the frame pointer to the stack.
Therefore the frame pointers did not constitute a proper chain.

Author: dominik-wojt-2311446

openmp/runtime/src/z_Linux_asm.S

@@ -1360,10 +1360,10 @@ __tid = 8
 	PROC __kmp_invoke_microtask
 	PACBTI_C
 
-	stp	x29, x30, [sp, #-16]!
 # if OMPT_SUPPORT
 	stp	x19, x20, [sp, #-16]!
 # endif
+	stp	x29, x30, [sp, #-16]!
 	mov	x29, sp
 
 	orr	w9, wzr, #1
@@ -1417,11 +1417,11 @@ KMP_LABEL(kmp_1):
 	blr	x8
 	orr	w0, wzr, #1
 	mov	sp, x29
+	ldp	x29, x30, [sp], #16
 # if OMPT_SUPPORT
 	str	xzr, [x19]
 	ldp	x19, x20, [sp], #16
 # endif
-	ldp	x29, x30, [sp], #16
 	PACBTI_RET
 	ret