package/rpi-firmware: convert dtb overlay install loop to make-level foreach loop

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit d0350a6c023ccbe4450d68d28c3797b1320087ba)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/rpi-firmware/rpi-firmware.mk

@@ -20,9 +20,9 @@ endif
 
 ifeq ($(BR2_PACKAGE_RPI_FIRMWARE_INSTALL_DTB_OVERLAYS),y)
 define RPI_FIRMWARE_INSTALL_DTB_OVERLAYS
-	for ovldtb in  $(@D)/boot/overlays/*.dtbo; do \
-		$(INSTALL) -D -m 0644 $${ovldtb} $(BINARIES_DIR)/rpi-firmware/overlays/$${ovldtb##*/} || exit 1; \
-	done
+	$(foreach ovldtb,$(wildcard $(@D)/boot/overlays/*.dtbo), \
+		$(INSTALL) -D -m 0644 $(ovldtb) $(BINARIES_DIR)/rpi-firmware/overlays/$(notdir $(ovldtb))
+	)
 endef
 else
 # Still create the directory, so a genimage.cfg can include it independently of