kbuild: re-enable Makefile generation in a new O=... directory
kbuild: re-enable Makefile generation in a new O=... directory

The commit:
18c32dac75b187d1a4e858f3cfdf03e844129f5e "kbuild: fix
building with O=.. options"
disabled the creation of a Makefile in a new O=... directory. Restore it.

Signed-off-by: Guillaume Chazarain <cf7d56636e224d5061a849eed38ed2d2952ac089@yahoo.fr>
Signed-off-by: Sam Ravnborg <f16bed56189e249fe4ca8ed10a1ecae60e8ceac0@ravnborg.org>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs