configure: add check for fallocate

We need to check for fallocate() rather than just linux/falloc.h +
FALLOC_FL_PUNCH_HOLE since in uClibc we've got both but still not
fallocate() itself since it's only implemented in newer unreleased
versions.

Change-Id: Ief309b2223f6c8203d01891dc8239dca1c8db75c
Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2 files changed