Makefile: Fix building natively on ppc64le

When on ppc64le and CROSS is not set by the environment, make assumes
ppc64 and sets a default CROSS. Check for ppc64le as well, so that
'make' works out of the box on ppc64le.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>

Makefile

@@ -9,11 +9,11 @@ ARCH = $(shell uname -m)
 ifdef CROSS_COMPILE
 	CROSS ?= $(CROSS_COMPILE)
 endif
-ifeq ("$(ARCH)", "ppc64")
-	CROSS ?=
-else
+ifneq ("$(ARCH)", "ppc64")
+ifneq ("$(ARCH)", "ppc64le")
 	CROSS ?= powerpc64-linux-
 endif
+endif
 
 #
 # Main debug switch