MIPS: dts: Avoid unneeded built-in.a in DTS dirs

arch/mips/boot/dts/Makefile collects objects from sub-directories into
built-in.a only when CONFIG_BUILTIN_DTB is enabled. Reflect it also to
the sub-directory Makefiles. This suppresses unneeded built-in.a
creation in arch/mips/boot/dts/*/ directories.

While I am here, I replaced $(patsubst %.dtb, %.dtb.o, $(dtb-y)) with
$(addsuffix .o, $(dtb-y)) to simplify the code a little bit.

Signed-off-by: Masahiro Yamada <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: Paul Cercueil <[email protected]>
Cc: Mathieu Malaterre <[email protected]>
Cc: Alexandre Belloni <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/19099/
Signed-off-by: James Hogan <[email protected]>

0 files changed, 0 insertions, 0 deletions