Create.c: fix uclibc build

Create.c: fix uclibc build

Define FALLOC_FL_ZERO_RANGE if needed as FALLOC_FL_ZERO_RANGE is only
defined for aarch64 on uclibc-ng resulting in the following or1k build
failure since commit 577fd10486d8d1472a6b559066f344ac30a3a391:

Create.c: In function 'write_zeroes_fork':
Create.c:155:35: error: 'FALLOC_FL_ZERO_RANGE' undeclared (first use in this function)
  155 |                 if (fallocate(fd, FALLOC_FL_ZERO_RANGE | FALLOC_FL_KEEP_SIZE,
      |                                   ^~~~~~~~~~~~~~~~~~~~

Fixes:
 - http://autobuild.buildroot.org/results/0e04bcdb591ca5642053e1f7e31384f06581e989

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>