Update all packages to quote $(TARGET_CC)

Now that TARGET_CC contains several space-separated words, it must be
used quoted everywhere.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/util-linux/util-linux.mk

@@ -59,7 +59,7 @@ $(UTIL-LINUX_BINARY): $(UTIL-LINUX_DIR)/.configured
 	$(MAKE) \
 		-C $(UTIL-LINUX_DIR) \
 		ARCH=$(ARCH) \
-		CC=$(TARGET_CC) \
+		CC="$(TARGET_CC)" \
 		OPT="$(TARGET_CFLAGS)" \
 		$(UTIL-LINUX_MAKE_OPT) \
 		HAVE_SLANG="NO"