opentyrian: 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/opentyrian/opentyrian.mk

@@ -20,7 +20,7 @@ OPENTYRIAN_NETWORK = false
 endif
 
 define OPENTYRIAN_BUILD_CMDS
-	$(MAKE) PLATFORM=UNIX \
+	$(TARGET_MAKE_ENV) $(MAKE) PLATFORM=UNIX \
 		CC="$(TARGET_CC)" \
 		STRIP="/bin/true" \
 		SDL_CONFIG="$(STAGING_DIR)/usr/bin/sdl-config" \