ARM is now Arm.

Change-Id: Ib272ebd46423dd1a84605abe3d6d2fe0c729b76a
diff --git a/src/fdt.c b/src/fdt.c
index d9cd71d..d12faf2 100644
--- a/src/fdt.c
+++ b/src/fdt.c
@@ -305,7 +305,7 @@
 		return true;
 	case sizeof(uint64_t):
 		/*
-		 * ARMv8 requires `data` to be realigned to 64-bit boundary
+		 * Armv8 requires `data` to be realigned to 64-bit boundary
 		 * to dereference as uint64_t. May not be needed on other
 		 * architectures.
 		 */