arm: Rename HCTR to HTCR

This appears to be a typo. Fix it.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/lib/cache-cp15.c b/arch/arm/lib/cache-cp15.c
index e9bbcf5..0f7020a 100644
--- a/arch/arm/lib/cache-cp15.c
+++ b/arch/arm/lib/cache-cp15.c
@@ -147,7 +147,7 @@
 #endif
 
 	if (is_hyp()) {
-		/* Set HCTR to enable LPAE */
+		/* Set HTCR to enable LPAE */
 		asm volatile("mcr p15, 4, %0, c2, c0, 2"
 			: : "r" (reg) : "memory");
 		/* Set HTTBR0 */