ARM: 6676/1: Correct the cpu_architecture() function for ARMv7

If ID_MMFR0[3:0] >= 3, the architecture version is ARMv7. The code was
currently only testing for ID_MMFR0[3:0] == 3.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/kernel/setup.c

@@ -226,8 +226,8 @@ int cpu_architecture(void)
 		 * Register 0 and check for VMSAv7 or PMSAv7 */
 		asm("mrc	p15, 0, %0, c0, c1, 4"
 		    : "=r" (mmfr0));
-		if ((mmfr0 & 0x0000000f) == 0x00000003 ||
-		    (mmfr0 & 0x000000f0) == 0x00000030)
+		if ((mmfr0 & 0x0000000f) >= 0x00000003 ||
+		    (mmfr0 & 0x000000f0) >= 0x00000030)
 			cpu_arch = CPU_ARCH_ARMv7;
 		else if ((mmfr0 & 0x0000000f) == 0x00000002 ||
 			 (mmfr0 & 0x000000f0) == 0x00000020)