Fix for SW video decoder OMX profile/level query

get the correct profile index from the input param and pass it to
profileLevel array to get the corresponding profile/level

Change-Id: I582961c0afb53c1781af7fb94226a23e5fdb96cf
Signed-off-by: Xiaosong Wei <xiaosong.wei@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
Signed-off-by: Jack Ren <jack.ren@intel.com>