core/pkg-kconfig: fix .config rule for silent mode

Ensure that each command line in the .config rule is prefixed by $$(Q)

Signed-off-by: Romain Izard <romain.izard.pro@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/pkg-kconfig.mk

@@ -63,11 +63,11 @@ $$($(2)_KCONFIG_FILE) $$($(2)_KCONFIG_FRAGMENT_FILES): | $(1)-patch
 # full .config first. We use 'make oldconfig' because this can be safely
 # done even when the package does not support defconfigs.
 $$($(2)_DIR)/.config: $$($(2)_KCONFIG_FILE) $$($(2)_KCONFIG_FRAGMENT_FILES)
-	$$(if $$($(2)_KCONFIG_DEFCONFIG), \
+	$$(Q)$$(if $$($(2)_KCONFIG_DEFCONFIG), \
 		$$($(2)_MAKE_ENV) $$(MAKE) -C $$($(2)_DIR) \
 			$$($(2)_KCONFIG_OPTS) $$($(2)_KCONFIG_DEFCONFIG), \
 		cp $$($(2)_KCONFIG_FILE) $$(@))
-	support/kconfig/merge_config.sh -m -O $$(@D) \
+	$$(Q)support/kconfig/merge_config.sh -m -O $$(@D) \
 		$$(@) $$($(2)_KCONFIG_FRAGMENT_FILES)
 	$$(Q)yes "" | $$($(2)_MAKE_ENV) $$(MAKE) -C $$($(2)_DIR) \
 		$$($(2)_KCONFIG_OPTS) oldconfig