[PATCH] powerpc/boot: Fix build of dts/fsl

[Michael Ellerman]

The lkp robot reported that some configs fail to build, for example
mpc85xx_smp_defconfig, with:

  cc1: fatal error: opening output file arch/powerpc/boot/dts/fsl/.mpc8540ads.dtb.dts.tmp: No such file or directory

This bisects to:
  cc8a51ca6f05 ("kbuild: always create directories of targets")

Although that commit claims to be about in-tree builds, it somehow
breaks out-of-tree builds. But presumably it's just exposing a latent
bug in our Makefiles.

We can fix it by adding to targets for dts/fsl in the same way that we
do for dts.

Fixes: cc8a51ca6f05 ("kbuild: always create directories of targets")
Reported-by: kernel test robot <lkp at intel.com>
Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
---
 arch/powerpc/boot/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 68a7534454cd..c3e084cceaed 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -372,6 +372,8 @@ initrd-y := $(filter-out $(image-y), $(initrd-y))
 targets	+= $(image-y) $(initrd-y)
 targets += $(foreach x, dtbImage uImage cuImage simpleImage treeImage, \
 		$(patsubst $(x).%, dts/%.dtb, $(filter $(x).%, $(image-y))))
+targets += $(foreach x, dtbImage uImage cuImage simpleImage treeImage, \
+		$(patsubst $(x).%, dts/fsl/%.dtb, $(filter $(x).%, $(image-y))))
 
 $(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz
 
-- 
2.25.1