disp: msm: sde: fix compilation error

Resolve errors like the following:

../techpack/display/msm/sde/sde_hw_dsc_1_2.c:80:15: error: type specifier missing, defaults to 'int' [-Werror,-Wimplicit-int]
static inline _dsc_subblk_offset(struct sde_hw_dsc *hw_dsc, int s_id,
~~~~~~~~~~~~~ ^
int
1 error generated.

Change-Id: I28175a35aa298a98b2954ab451a3db2020cf4996
2 files changed