common: fix alignment of variable in AArch64 menu thunk
Fixes a problem that sometimes occured due to a specific relocation being used for the misaligned variable.
diff --git a/common/menu_thunk.asm_aarch64 b/common/menu_thunk.asm_aarch64
index 2e6ae59c..69d47422 100644
--- a/common/menu_thunk.asm_aarch64
+++ b/common/menu_thunk.asm_aarch64
@@ -1,5 +1,6 @@
.section .data
+.align 3
stack_at_first_entry:
.quad 0
