drm/amd/display: Refactoring DSC enum dsc_bits_per_comp.

[Why]
Previously the 'dsc_bits_per_comp' enumeration was defined in individual
.c files, making it unavailable for other files that may need it.

[How]
The 'dsc_bits_per_comp' enumeration has been relocated to a common header
file.

Reviewed-by: Mounika Adhuri <Mounika.Adhuri@amd.com>
Reviewed-by: Martin Leung <martin.leung@amd.com>
Signed-off-by: Bhuvanachandra Pinninti <bpinnint@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dsc/dcn20/dcn20_dsc.c

@@ -57,13 +57,6 @@ static const struct dsc_funcs dcn20_dsc_funcs = {
 #define DC_LOGGER \
 	dsc->ctx->logger
 
-enum dsc_bits_per_comp {
-	DSC_BPC_8 = 8,
-	DSC_BPC_10 = 10,
-	DSC_BPC_12 = 12,
-	DSC_BPC_UNKNOWN
-};
-
 /* API functions (external or via structure->function_pointer) */
 
 void dsc2_construct(struct dcn20_dsc *dsc,

drivers/gpu/drm/amd/display/dc/dsc/dcn20/dcn20_dsc.h

@@ -457,6 +457,12 @@
 	type DSCRM_DSC_DOUBLE_BUFFER_REG_UPDATE_PENDING; \
 	type DSCRM_DSC_FORWARD_EN_STATUS
 
+enum dsc_bits_per_comp {
+	DSC_BPC_8 = 8,
+	DSC_BPC_10 = 10,
+	DSC_BPC_12 = 12,
+	DSC_BPC_UNKNOWN
+};
 
 struct dcn20_dsc_registers {
 	uint32_t DSC_TOP_CONTROL;

drivers/gpu/drm/amd/display/dc/dsc/dcn401/dcn401_dsc.c

@@ -45,12 +45,6 @@ static const struct dsc_funcs dcn401_dsc_funcs = {
 #define DC_LOGGER \
 	dsc->ctx->logger
 
-enum dsc_bits_per_comp {
-	DSC_BPC_8 = 8,
-	DSC_BPC_10 = 10,
-	DSC_BPC_12 = 12,
-	DSC_BPC_UNKNOWN
-};
 
 /* API functions (external or via structure->function_pointer) */