msm: kgsl: Change register bit values from BIT macro to hex value

The BIT() macro results in value being 64 bit wide. We assign the
register bit values to a 32 bit variable which results in
compilation errors. Therefore, change the value to hex to ensure
this works.

Change-Id: I05aa50adaf709d1d41877d918edf5e2d9b335830
Signed-off-by: Shrenuj Bansal <shrenujb@codeaurora.org>