[ARM] 3020/1: Fixes typo error CONFIG_CPU_IXP465, which should be CONFIG_CPU_IXP46X

Patch from Kenneth Tan

The cpu_is_ixp465 macro in include/asm-arm/arch-ixp4xx/hardware.h is always returning 0 because #ifdef CONFIG_CPU_IXP465 is always false.
Signed-off-by: NKenneth Tan <chong.yin.tan@intel.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

include/asm-arm/arch-ixp4xx/hardware.h

@@ -27,7 +27,7 @@
 
 #define pcibios_assign_all_busses()	1
 
-#if defined(CONFIG_CPU_IXP465) && !defined(__ASSEMBLY__)
+#if defined(CONFIG_CPU_IXP46X) && !defined(__ASSEMBLY__)
 extern unsigned int processor_id;
 #define cpu_is_ixp465() ((processor_id & 0xffffffc0) == 0x69054200)
 #else