drm/amd/display: Fix kdoc entry for 'tps' in 'dc_process_dmub_dpia_set_tps_notification'

Correct the parameter descriptor for the function
`dc_process_dmub_dpia_set_tps_notification` to match the actual
parameters used.

Fixes the below with gcc W=1:
drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc.c:5768: warning: Function parameter or struct member 'tps' not described in 'dc_process_dmub_dpia_set_tps_notification'
drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc.c:5768: warning: Excess function parameter 'ts' description in 'dc_process_dmub_dpia_set_tps_notification'

Cc: Tom Chung <chiahsuan.chung@amd.com>
Cc: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Cc: Roman Li <roman.li@amd.com>
Cc: Alex Hung <alex.hung@amd.com>
Cc: Aurabindo Pillai <aurabindo.pillai@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>