[ARM] 3780/1: Fix iop321 cpuid

Patch from Dan Williams

commit a6a38a66 changed the iop321 id to a value that does not work with all platforms.  Change the mask to permit bit 11.  Tested on an iq80321 600Mhz CRB.
Signed-off-by: NDan Williams <dan.j.williams@intel.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mm/proc-xscale.S

@@ -644,7 +644,7 @@ __80219_proc_info:
 	.type	__8032x_proc_info,#object
 __8032x_proc_info:
 	.long	0x69052420
-	.long	0xffffffe0
+	.long	0xfffff7e0
 	.long   PMD_TYPE_SECT | \
 		PMD_SECT_BUFFERABLE | \
 		PMD_SECT_CACHEABLE | \