Since commit e7554c0cb245 (kbuild: create a build directory
automatically for out-of-tree build), MAKEALL does not have to
create a build directory. It it done by the top Makefile.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>