powerpc: Fix _ALIGN_* errors due to type difference.

This avoid errors like

        unsigned int usize = 1 << 30;
        int size = 1 << 30;
        unsigned long addr = 64UL << 30 ;

        value = _ALIGN_DOWN(addr, usize); -> 0
        value = _ALIGN_DOWN(addr, size);  -> 0x1000000000

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/boot/page.h

@@ -22,8 +22,8 @@
 #define PAGE_MASK	(~(PAGE_SIZE-1))
 
 /* align addr on a size boundary - adjust address up/down if needed */
-#define _ALIGN_UP(addr,size)	(((addr)+((size)-1))&(~((size)-1)))
-#define _ALIGN_DOWN(addr,size)	((addr)&(~((size)-1)))
+#define _ALIGN_UP(addr, size)	(((addr)+((size)-1))&(~((typeof(addr))(size)-1)))
+#define _ALIGN_DOWN(addr, size)	((addr)&(~((typeof(addr))(size)-1)))
 
 /* align addr on a size boundary - adjust address up if needed */
 #define _ALIGN(addr,size)     _ALIGN_UP(addr,size)

arch/powerpc/include/asm/page.h

@@ -12,6 +12,7 @@
 
 #ifndef __ASSEMBLY__
 #include <linux/types.h>
+#include <linux/kernel.h>
 #else
 #include <asm/types.h>
 #endif
@@ -241,8 +242,8 @@ extern long long virt_phys_offset;
 #endif
 
 /* align addr on a size boundary - adjust address up/down if needed */
-#define _ALIGN_UP(addr,size)	(((addr)+((size)-1))&(~((size)-1)))
-#define _ALIGN_DOWN(addr,size)	((addr)&(~((size)-1)))
+#define _ALIGN_UP(addr, size)   __ALIGN_KERNEL(addr, size)
+#define _ALIGN_DOWN(addr, size)	((addr)&(~((typeof(addr))(size)-1)))
 
 /* align addr on a size boundary - adjust address up if needed */
 #define _ALIGN(addr,size)     _ALIGN_UP(addr,size)