fs/common.mk: make sure that static devices from packages are created

The static devices defined by packages are currently added to the full
device table when two conditions are met:

 (1) ROOTFS_DEVICE_TABLES is non-empty
 (2) BR2_ROOTFS_DEVICE_CREATION_STATIC=y

(2) is obviously correct. However, depending on (1) is not correct: if
the user doesn't provide any custom permission table and custom device
table, then ROOTFS_DEVICE_TABLES will be empty.

So instead, move the addition of the package-defined static devices
outside of condition (1), and have it only under condition (2).

Reported-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

fs/common.mk

@@ -61,10 +61,10 @@ endif
 	$(call PRINTF,$(PACKAGES_PERMISSIONS_TABLE)) > $(ROOTFS_FULL_DEVICES_TABLE)
 ifneq ($(ROOTFS_DEVICE_TABLES),)
 	cat $(ROOTFS_DEVICE_TABLES) >> $(ROOTFS_FULL_DEVICES_TABLE)
+endif
 ifeq ($(BR2_ROOTFS_DEVICE_CREATION_STATIC),y)
 	$(call PRINTF,$(PACKAGES_DEVICES_TABLE)) >> $(ROOTFS_FULL_DEVICES_TABLE)
 endif
-endif
 
 rootfs-common-show-depends:
 	@echo $(ROOTFS_COMMON_DEPENDENCIES)