video: driver: add scale clocks and buses functions

Add clocks and buses scaling functionality.

Change-Id: Ifa61043a938bc5c1990f6baf1777a3f2270fc77d
Signed-off-by: Maheshwar Ajja <majja@codeaurora.org>

driver/variant/iris2/inc/msm_vidc_power_iris2.h

@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef __H_MSM_VIDC_POWER_IRIS2_H__
+#define __H_MSM_VIDC_POWER_IRIS2_H__
+
+#include "msm_vidc_inst.h"
+
+u64 msm_vidc_calc_freq_iris2(struct msm_vidc_inst* inst);
+u64 msm_vidc_calc_bw_iris2(struct msm_vidc_inst* inst);
+
+#endif