RIL: fix permission issue for modem ramdump

Kickstart will use /data/qcks/mdm to store modem ramdump.
This function only available in debug version.

Change-Id: I0d60cdcf43c04a13721f9a84863458f356218f8b
Signed-off-by: tim.tm_lin <tim.tm_lin@htc.com>
3 files changed