MGS-4338-1 [#imx-1217] fix GPU probe delay to query frequency

MGS-4338-1 [#imx-1217] fix GPU probe delay to query frequency

it is not necessary to query frequency when hardware initialize,
there are two cases which really need to query frequency,
1. application query (such as openCL initialization) with ioctl,
2. debugfs with "cat /sys/kernel/debug/gc/clk"

removed the query from driver probe, no impact on real cases.

Signed-off-by: Xianzhong <xianzhong.li@nxp.com>
Signed-off-by: Arulpandiyan Vadivel <arulpandiyan_vadivel@mentor.com>