msm: synx: Handling the base in idr_alloc

In idr_alloc the base value is becoming less than zero after some
iteration.so we are make it positive when the value is less than zero..

Change-Id: Iafa53f9f09a9ac029e57b8deee0e0b30b7851acd
Signed-off-by: Ram Nagesh <quic_ramnages@quicinc.com>