[PATCH] Makefile: Fix config-devices.mak not regenerated when Kconfig updated

[Philippe Mathieu-Daudé]

When hw/$DIR/Kconfig is changed, the corresponding generated
hw/$DIR/config-devices.mak is not being updated.
Fix this by including all the hw/*/Kconfig files to the prerequisite
names of the rule generating the config-devices.mak files.

Fixes: e0e312f3525a (build: switch to Kconfig)
Reported-by: Peter Maydell <address@hidden>
Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
If OK, I plan to include this fix in the "hw/i386/pc: Split PIIX3
southbridge from i440FX northbridge" pull request.
---
 Makefile | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 0e994a275d..c1461b21e8 100644
--- a/Makefile
+++ b/Makefile
@@ -384,7 +384,10 @@ MINIKCONF_ARGS = \
     CONFIG_LINUX=$(CONFIG_LINUX) \
     CONFIG_PVRDMA=$(CONFIG_PVRDMA)
 
-MINIKCONF_INPUTS = $(SRC_PATH)/Kconfig.host $(SRC_PATH)/hw/Kconfig
+MINIKCONF_INPUTS = $(SRC_PATH)/Kconfig.host $(SRC_PATH)/hw/Kconfig \
+                   $(patsubst %,$(SRC_PATH)/hw/%,$(shell sed -ne \
+                                                    's/source \(.*\)/\1/p' \
+                                                    < $(SRC_PATH)/hw/Kconfig))
 MINIKCONF = $(PYTHON) $(SRC_PATH)/scripts/minikconf.py \
 
 $(SUBDIR_DEVICES_MAK): %/config-devices.mak: default-configs/%.mak 
$(MINIKCONF_INPUTS) $(BUILD_DIR)/config-host.mak
-- 
2.21.0