The CONFIG_CACHEFILES configuration option makes the kernel build
cachefiles.ko, also package it. Build CONFIG_CACHEFILES as module and do
not try to build it into the kernel. This did not work because it
depended on CONFIG_FSCACHE which was already build as module.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
724ef7b484