[ARM] 3757/1: Use PROCINFO_INITFUNC in head.S

Patch from Catalin Marinas

This is instead of a magic number.
Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/kernel/head.S

@@ -118,7 +118,7 @@ ENTRY(secondary_startup)
 	sub	r4, r4, r5			@ mmu has been enabled
 	ldr	r4, [r7, r4]			@ get secondary_data.pgdir
 	adr	lr, __enable_mmu		@ return address
-	add	pc, r10, #12			@ initialise processor
+	add	pc, r10, #PROCINFO_INITFUNC	@ initialise processor
 						@ (return control reg)
 
 	/*