ARC: entry.S: move some code around for cache locality in return path

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

arch/arc/kernel/entry-compact.S

@@ -391,3 +391,5 @@ not_level1_interrupt:
 	EXCEPTION_EPILOGUE
 debug_marker_syscall:
 	rtie
+
+END(ret_from_exception)