ARM: 8599/1: mm: pull asm/memory.h explicitly

Commit d78114554939a (""ARM: 8512/1: proc-v7.S: Adjust stack address when
XIP_KERNEL"") introduced a macro which lives under asm/memory.h.
Unfortunately, for MMU-less systems (like R-class) it leads to build failure:

arch/arm/mm/proc-v7.S: Assembler messages:
arch/arm/mm/proc-v7.S:538: Error: unrecognised relocation suffix
make[1]: *** [arch/arm/mm/proc-v7.o] Error 1
make: *** [arch/arm/mm] Error 2

since it is implicitly pulled via asm/pgtable.h for MMU capable systems only.

To fix it include asm/memory.h explicitly.

Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mm/proc-v7.S

@@ -16,6 +16,7 @@
 #include <asm/hwcap.h>
 #include <asm/pgtable-hwdef.h>
 #include <asm/pgtable.h>
+#include <asm/memory.h>
 
 #include "proc-macros.S"