drm/amd/display: Fix up kdoc formatting in dcn32_resource_helpers.c

Fixes the following W=1 kernel build warning:

drivers/gpu/drm/amd/amdgpu/../display/dc/dcn32/dcn32_resource_helpers.c:97: warning: Cannot understand  * **************************************************************************
drivers/gpu/drm/amd/amdgpu/../display/dc/dcn32/dcn32_resource_helpers.c:264: warning: Cannot understand  * *************************************************************************
drivers/gpu/drm/amd/amdgpu/../display/dc/dcn32/dcn32_resource_helpers.c:435: warning: Cannot understand  * *************************************************************************
drivers/gpu/drm/amd/amdgpu/../display/dc/dcn32/dcn32_resource_helpers.c:475: warning: Cannot understand  * *************************************************************************

drivers/gpu/drm/amd/amdgpu/../display/dc/dcn32/dcn32_resource_helpers.c:599:
warning: Function parameter or member 'dc' not described in
'dcn32_can_support_mclk_switch_using_fw_based_vblank_stretch'
drivers/gpu/drm/amd/amdgpu/../display/dc/dcn32/dcn32_resource_helpers.c:599:
warning: Function parameter or member 'context' not described in
'dcn32_can_support_mclk_switch_using_fw_based_vblank_stretch'

drivers/gpu/drm/amd/amdgpu/../display/dc/dcn32/dcn32_resource_helpers.c:587:
warning: Function parameter or member 'dc' not described in
'dcn32_can_support_mclk_switch_using_fw_based_vblank_stretch'
drivers/gpu/drm/amd/amdgpu/../display/dc/dcn32/dcn32_resource_helpers.c:587:
warning: Function parameter or member 'context' not described in
'dcn32_can_support_mclk_switch_using_fw_based_vblank_stretch'

Cc: Hamza Mahfooz <hamza.mahfooz@amd.com>
Cc: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>