x86/mm: Align macro defines

Bring PAGE_{SHIFT,SIZE,MASK} to the same indentation level as the rest
of the header.
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1449480268-26583-1-git-send-email-bp@alien8.deSigned-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/include/asm/page_types.h

@@ -5,9 +5,9 @@
 #include <linux/types.h>
 
 /* PAGE_SHIFT determines the page size */
-#define PAGE_SHIFT	12
-#define PAGE_SIZE	(_AC(1,UL) << PAGE_SHIFT)
-#define PAGE_MASK	(~(PAGE_SIZE-1))
+#define PAGE_SHIFT		12
+#define PAGE_SIZE		(_AC(1,UL) << PAGE_SHIFT)
+#define PAGE_MASK		(~(PAGE_SIZE-1))
 
 #define PMD_PAGE_SIZE		(_AC(1, UL) << PMD_SHIFT)
 #define PMD_PAGE_MASK		(~(PMD_PAGE_SIZE-1))