misc: fuse: make type of tegra_get_chip_id() to consistent

misc: fuse: make type of tegra_get_chip_id() to consistent

For some Tegra SOCs, the function tegra_get_chip_id() returns u8
and for some other it returns u32.

Make the return type to be consistent and should return u8 data type.

bug 200260692

Change-Id: I1a2204ed2b34f706543a7b9630546c7fcb16de5a
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: http://git-master/r/1268604
GVS: Gerrit_Virtual_Submit
Reviewed-by: Shardar Mohammed <smohammed@nvidia.com>
Reviewed-by: Venkat Reddy Talla <vreddytalla@nvidia.com>