barebox: patch-kernel.sh is no more

Thanks to Sven Neumann for noticing.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

boot/barebox/barebox.mk

@@ -22,7 +22,7 @@ endif
 
 ifneq ($(call qstrip,$(BR2_TARGET_BAREBOX_CUSTOM_PATCH_DIR)),)
 define BAREBOX_APPLY_CUSTOM_PATCHES
-	toolchain/patch-kernel.sh $(@D) $(BR2_TARGET_BAREBOX_CUSTOM_PATCH_DIR) \
+	support/scripts/apply-patches.sh $(@D) $(BR2_TARGET_BAREBOX_CUSTOM_PATCH_DIR) \
 		barebox-$(BAREBOX_VERSION)-\*.patch
 endef