smstools3: 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/smstools3/smstools3.mk

@@ -14,7 +14,7 @@ SMSTOOLS3_CFLAGS += -D NUMBER_OF_MODEMS=$(BR2_PACKAGE_SMSTOOLS3_NB_MODEMS)
 SMSTOOLS3_CFLAGS += -D NOSTATS
 
 define SMSTOOLS3_BUILD_CMDS
-	$(MAKE) CC="$(TARGET_CC)" CFLAGS="$(SMSTOOLS3_CFLAGS)" -C $(@D)
+	$(TARGET_MAKE_ENV) $(MAKE) CC="$(TARGET_CC)" CFLAGS="$(SMSTOOLS3_CFLAGS)" -C $(@D)
 endef
 
 define SMSTOOLS3_INSTALL_INIT_SYSV