arm: Don't try to support CONFIG_ARMV7_LPAE on ARMv4T

At present if CONFIG_ARMV7_LPAE is defined then mmu_setup() will use
instructions which are invalid on ARMv4T. This happens on Tegra since it
has an ARMv4T boot CPU. Add a check for the architecture version to allow
the code to be built. It will not actually be executed by the boot CPU,
but needs to compile.

Signed-off-by: Simon Glass <sjg@chromium.org>

arch/arm/lib/cache-cp15.c

@@ -129,7 +129,7 @@ static inline void mmu_setup(void)
 		dram_bank_mmu_setup(i);
 	}
 
-#ifdef CONFIG_ARMV7_LPAE
+#if defined(CONFIG_ARMV7_LPAE) && __LINUX_ARM_ARCH__ != 4
 	/* Set up 4 PTE entries pointing to our 4 1GB page tables */
 	for (i = 0; i < 4; i++) {
 		u64 *page_table = (u64 *)(gd->arch.tlb_addr + (4096 * 4));