drm/radeon/cik: Fix a bunch of function parameter descriptions

drm/radeon/cik: Fix a bunch of function parameter descriptions

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

 drivers/gpu/drm/radeon/cik.c:1869:5: warning: no previous prototype for ‘ci_mc_load_microcode’ [-Wmissing-prototypes]
 drivers/gpu/drm/radeon/cik.c: In function ‘cik_gpu_init’:
 drivers/gpu/drm/radeon/cik.c:3181:6: warning: variable ‘mc_shared_chmap’ set but not used [-Wunused-but-set-variable]
 drivers/gpu/drm/radeon/cik.c: At top level:
 drivers/gpu/drm/radeon/cik.c:4852:5: warning: no previous prototype for ‘cik_gpu_check_soft_reset’ [-Wmissing-prototypes]
 drivers/gpu/drm/radeon/cik.c:5850:6: warning: no previous prototype for ‘cik_enter_rlc_safe_mode’ [-Wmissing-prototypes]
 drivers/gpu/drm/radeon/cik.c:5871:6: warning: no previous prototype for ‘cik_exit_rlc_safe_mode’ [-Wmissing-prototypes]
 drivers/gpu/drm/radeon/cik.c:6289:6: warning: no previous prototype for ‘cik_update_cg’ [-Wmissing-prototypes]
 drivers/gpu/drm/radeon/cik.c:6421:6: warning: no previous prototype for ‘cik_init_cp_pg_table’ [-Wmissing-prototypes]
 drivers/gpu/drm/radeon/cik.c:6678:5: warning: no previous prototype for ‘cik_get_csb_size’ [-Wmissing-prototypes]
 drivers/gpu/drm/radeon/cik.c:6710:6: warning: no previous prototype for ‘cik_get_csb_buffer’ [-Wmissing-prototypes]
 drivers/gpu/drm/radeon/cik.c:3084: warning: Function parameter or member 'max_rb_num_per_se' not described in 'cik_get_rb_disabled'
 drivers/gpu/drm/radeon/cik.c:3084: warning: Excess function parameter 'max_rb_num' description in 'cik_get_rb_disabled'
 drivers/gpu/drm/radeon/cik.c:3084: warning: Excess function parameter 'se_num' description in 'cik_get_rb_disabled'
 drivers/gpu/drm/radeon/cik.c:3114: warning: Function parameter or member 'max_rb_num_per_se' not described in 'cik_setup_rb'
 drivers/gpu/drm/radeon/cik.c:3114: warning: Excess function parameter 'max_rb_num' description in 'cik_setup_rb'
 drivers/gpu/drm/radeon/cik.c:5662: warning: Function parameter or member 'mc_client' not described in 'cik_vm_decode_fault'
 drivers/gpu/drm/radeon/cik.c:5690: warning: Function parameter or member 'ring' not described in 'cik_vm_flush'
 drivers/gpu/drm/radeon/cik.c:5690: warning: Function parameter or member 'vm_id' not described in 'cik_vm_flush'
 drivers/gpu/drm/radeon/cik.c:5690: warning: Function parameter or member 'pd_addr' not described in 'cik_vm_flush'

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: Sumit Semwal <sumit.semwal@linaro.org>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>