xtensa: Remove zero-length alignment array

Align the whole struct to 16 bytes instead of using a zero-length
alignment array.

Signed-off-by: Thorsten Blum <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Max Filippov <[email protected]>

Author: toblux

arch/xtensa/include/asm/processor.h

@@ -160,9 +160,7 @@ struct thread_struct {
 	struct perf_event *ptrace_bp[XCHAL_NUM_IBREAK];
 	struct perf_event *ptrace_wp[XCHAL_NUM_DBREAK];
 #endif
-	/* Make structure 16 bytes aligned. */
-	int align[0] __attribute__ ((aligned(16)));
-};
+} __aligned(16);
 
 /* This decides where the kernel will search for a free chunk of vm
  * space during mmap's.