drm/amd/display: Use MAX_PIPES for DTO reg arrays

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.h

@@ -107,9 +107,9 @@ struct dce110_clk_src_regs {
 	/* below are for DTO.
 	 * todo: should probably use different struct to not waste space
 	 */
-	uint32_t PHASE[4];
-	uint32_t MODULO[4];
-	uint32_t PIXEL_RATE_CNTL[4];
+	uint32_t PHASE[MAX_PIPES];
+	uint32_t MODULO[MAX_PIPES];
+	uint32_t PIXEL_RATE_CNTL[MAX_PIPES];
 };
 
 struct dce110_clk_src {