uboot-mkimage: use correct host compiler/flags

As used elswwhere in BR.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/uboot-mkimage/uboot-mkimage-2011.03-hostcflags-override-fix.patch

@@ -0,0 +1,29 @@
+[PATCH] Fix tools build with custom HOSTCFLAGS
+
+We always need to append HOSTCPPFLAGS, even if HOSTCFLAGS have been
+overridden on the cmdline.
+
+Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
+---
+ config.mk |    6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+Index: u-boot-2011.03/config.mk
+===================================================================
+--- u-boot-2011.03.orig/config.mk
++++ u-boot-2011.03/config.mk
+@@ -46,10 +46,12 @@
+ 
+ #########################################################################
+ 
+-HOSTCFLAGS	= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \
+-		  $(HOSTCPPFLAGS)
++HOSTCFLAGS	= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
+ HOSTSTRIP	= strip
+ 
++# append CPPFLAGS even if CFLAGS has been overridden on cmdline
++override HOSTCFLAGS += $(HOSTCPPFLAGS)
++
+ #
+ # Mac OS X / Darwin's C preprocessor is Apple specific.  It
+ # generates numerous errors and warnings.  We want to bypass it

package/uboot-mkimage/uboot-mkimage.mk

@@ -4,8 +4,9 @@ UBOOT_MKIMAGE_SITE    = ftp://ftp.denx.de/pub/u-boot
 
 define HOST_UBOOT_MKIMAGE_BUILD_CMDS
 	$(MAKE) -C $(@D) 			\
-		CROSS_COMPILE="$(TARGET_CROSS)" \
-		ARCH=$(U_BOOT_ARCH) 		\
+		HOSTCC="$(HOSTCC)"		\
+		HOSTCFLAGS="$(HOST_CFLAGS)"	\
+		HOSTLDFLAGS="$(HOST_LDFLAGS)"	\
 		tools
 endef