compiler.h: replace QEMU_NORETURN with G_NORETURN

G_NORETURN was introduced in glib 2.68, fallback to G_GNUC_NORETURN in
glib-compat.

Note that this attribute must be placed before the function declaration
(bringing a bit of consistency in qemu codebase usage).

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20220420132624.2439741-20-marcandre.lureau@redhat.com>
diff --git a/target/hppa/op_helper.c b/target/hppa/op_helper.c
index 2810361..cd304f0 100644
--- a/target/hppa/op_helper.c
+++ b/target/hppa/op_helper.c
@@ -28,7 +28,7 @@
 #include "fpu/softfloat.h"
 #include "trace.h"
 
-void QEMU_NORETURN HELPER(excp)(CPUHPPAState *env, int excp)
+G_NORETURN void HELPER(excp)(CPUHPPAState *env, int excp)
 {
     CPUState *cs = env_cpu(env);
 
@@ -36,7 +36,7 @@
     cpu_loop_exit(cs);
 }
 
-void QEMU_NORETURN hppa_dynamic_excp(CPUHPPAState *env, int excp, uintptr_t ra)
+G_NORETURN void hppa_dynamic_excp(CPUHPPAState *env, int excp, uintptr_t ra)
 {
     CPUState *cs = env_cpu(env);