mtd-utils: fix build with external toolchain

Reported by H Hartley Sweeten.

Make sure we pass proper CFLAGS to mtd-utils, so builds needing --sysroot
works (E.G. external toolchains).

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

CHANGES

@@ -2,7 +2,7 @@
 
 	 X.org updated to 7.5.
 
-	 Updated/fixed packages: dosfstools, e2fsprogs, squashfs
+	 Updated/fixed packages: dosfstools, e2fsprogs, mtd-utils, squashfs
 
 2010.02, Release February 26th, 2010:
 

package/mtd/mtd.mk

@@ -111,14 +111,14 @@ MTD_BUILD_TARGETS := $(MTD_TARGETS) $(MTD_UBI_TARGETS)
 
 $(MTD_BUILD_TARGETS): $(MTD_DIR)/.unpacked
 ifneq ($(MTD_TARGETS),)
-	$(MAKE) LDFLAGS="$(TARGET_LDFLAGS)" \
+	$(MAKE) $(TARGET_CONFIGURE_ENV) \
 		BUILDDIR=$(MTD_DIR) \
 		CROSS=$(TARGET_CROSS) CC=$(TARGET_CC) \
 		WITHOUT_XATTR=1 WITHOUT_LARGEFILE=1 \
 		-C $(MTD_DIR) $(MTD_TARGETS)
 endif
 ifneq ($(MTD_UBI_TARGETS),)
-	$(MAKE) LDFLAGS="$(TARGET_LDFLAGS)" \
+	$(MAKE) $(TARGET_CONFIGURE_ENV) \
 		BUILDDIR=$(MTD_DIR)/ubi-utils \
 		CROSS=$(TARGET_CROSS) CC=$(TARGET_CC) \
 		WITHOUT_XATTR=1 WITHOUT_LARGEFILE=1 \