[ARM] 4849/1: move ATAGS asm definitions

Move the definitions of ATAG_CORE and ATAG_CORE_SIZE in head.S to
head-common.S. There is no use of these in head.S itself, but they
are used in head-common.S. When building for the !CONFIG_MMU case
these were not defined when compiling head-nommu.S (which includes
head-common.S).
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/kernel/head-common.S

@@ -11,6 +11,9 @@
  *
  */
 
+#define ATAG_CORE 0x54410001
+#define ATAG_CORE_SIZE ((2*4 + 3*4) >> 2)
+
 	.type	__switch_data, %object
 __switch_data:
 	.long	__mmap_switched

arch/arm/kernel/head.S

@@ -29,9 +29,6 @@
 #define KERNEL_RAM_VADDR	(PAGE_OFFSET + TEXT_OFFSET)
 #define KERNEL_RAM_PADDR	(PHYS_OFFSET + TEXT_OFFSET)
 
-#define ATAG_CORE 0x54410001
-#define ATAG_CORE_SIZE ((2*4 + 3*4) >> 2)
-
 
 /*
  * swapper_pg_dir is the virtual address of the initial page table.