mmc-utils: use upstream provided install target

Cc: Sébastien Szymanski <sebastien.szymanski@armadeus.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/mmc-utils/mmc-utils.mk

@@ -13,7 +13,7 @@ define MMC_UTILS_BUILD_CMDS
 endef
 
 define MMC_UTILS_INSTALL_TARGET_CMDS
-	$(INSTALL) -D -m 0755 $(@D)/mmc $(TARGET_DIR)/usr/bin/mmc
+	$(MAKE) -C $(@D) prefix=/usr DESTDIR=$(TARGET_DIR) install
 endef
 
 $(eval $(generic-package))