drm/amd/display/dc/bios/bios_parser: Fix misspelling of function parameter

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/amd/amdgpu/../display/dc/bios/bios_parser.c:997: warning: Function parameter or member 'ss_info' not described in 'get_ss_info_from_tbl'
 drivers/gpu/drm/amd/amdgpu/../display/dc/bios/bios_parser.c:997: warning: Excess function parameter 'ssinfo' description in 'get_ss_info_from_tbl'

Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/bios/bios_parser.c

@@ -987,8 +987,8 @@ static enum bp_result get_ss_info_from_internal_ss_info_tbl_V2_1(
  *
  * @bp:      pointer to the BIOS parser
  * @id:      spread sprectrum info index
- * @ssinfo:  sprectrum information structure,
- * return::  BIOS parser result code
+ * @ss_info: sprectrum information structure,
+ * return:   BIOS parser result code
  */
 static enum bp_result get_ss_info_from_tbl(
 	struct bios_parser *bp,