[PATCH] xtensa: add boot-elf targets to extra-y

[Max Filippov]

The commit 8fe87a92f262 ("kbuild: always create directories of targets")
exposed an issue in the xtensa makefiles that results in the following
build error in a clean directory:
  scripts/Makefile.build:374: arch/xtensa/boot/boot-elf/boot.lds] Error 1
    arch/xtensa/boot/boot-elf/bootstrap.S:21: fatal error:
    opening dependency file arch/xtensa/boot/boot-elf/.bootstrap.o.d:
    No such file or directory

Intermediate targets in arch/xtensa/boot/boot-elf don't get into
'targets' and build directory is not created for them.
Add boot.lds and bootstrap.o to extra-y.

Cc: Masahiro Yamada <masahiroy@xxxxxxxxxx>
Signed-off-by: Max Filippov <jcmvbkbc@xxxxxxxxx>
---
 arch/xtensa/boot/boot-elf/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/xtensa/boot/boot-elf/Makefile b/arch/xtensa/boot/boot-elf/Makefile
index a62a25506536..eb952d809d81 100644
--- a/arch/xtensa/boot/boot-elf/Makefile
+++ b/arch/xtensa/boot/boot-elf/Makefile
@@ -15,6 +15,7 @@ export CPPFLAGS_boot.lds += -P -C
 export KBUILD_AFLAGS += -mtext-section-literals
 
 boot-y		:= bootstrap.o
+extra-y		:= boot.lds $(boot-y)
 
 OBJS		:= $(addprefix $(obj)/,$(boot-y))
 
-- 
2.20.1