bsdiff: use $(TARGET_MAKE_ENV) when calling $(MAKE)

Signed-off-by: Gustavo Zacarias <gustavo.zacarias@free-electrons.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/bsdiff/bsdiff.mk

@@ -11,9 +11,9 @@ BSDIFF_LICENSE = BSD-2c
 BSDIFF_LICENSE_FILES = bsdiff.c
 
 define BSDIFF_BUILD_CMDS
-	$(TARGET_CC) $(TARGET_CFLAGS) $(TARGET_LDFLAGS) \
+	$(TARGET_MAKE_ENV) $(TARGET_CC) $(TARGET_CFLAGS) $(TARGET_LDFLAGS) \
 		$(@D)/bsdiff.c -lbz2 -o $(@D)/bsdiff
-	$(TARGET_CC) $(TARGET_CFLAGS) $(TARGET_LDFLAGS) \
+	$(TARGET_MAKE_ENV) $(TARGET_CC) $(TARGET_CFLAGS) $(TARGET_LDFLAGS) \
 		$(@D)/bspatch.c -lbz2 -o $(@D)/bspatch
 endef