gpu: update gpu driver for t5 [1/1]

PD#SWPL-33677

Problem:
The mali poweron ack reg have been remove on T5
The read operation of AO_RTI_GEN_PWR_ACK0 will result in crash

Solution:
replace the gpu power on status with gpu internal reg value.

Verify:
ak326 socket board

Change-Id: If9ad2eac0ba5759dc91901b2e7e296caf04a25a5
Signed-off-by: Dezhi Kong <dezhi.kong@amlogic.com>