[ARM] Feroceon: catch other Feroceon CPU IDs in head.S

Tweak the Feroceon match/mask in arch/arm/boot/compressed/head.S to
match a couple of newer Feroceon cores (such as the 88fr571vd with
CPU ID 0x56155710, and the 88fr131 with CPU ID 0x56251310) as well.
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>

arch/arm/boot/compressed/head.S

@@ -623,8 +623,8 @@ proc_types:
 		b	__armv4_mmu_cache_off
 		b	__armv4_mmu_cache_flush
 
-		.word	0x56055310		@ Feroceon
-		.word	0xfffffff0
+		.word	0x56050000		@ Feroceon
+		.word	0xff0f0000
 		b	__armv4_mmu_cache_on
 		b	__armv4_mmu_cache_off
 		b	__armv5tej_mmu_cache_flush