gpu: nvgpu: Refactor PERF VFE unit

-Created ucode_perf_vfe_inf.h and moved all VFE
 interface structs and MACROs into this header
-Created nvgpu_clk_fll_get_fmargin_idx to get
 freq margin index
-Created nvgpu_vfe_var_get_s_param to read s_param
-Removed MACROs and header includes which are
 not needed

NVGPU-4448

Change-Id: I89f946d555bcbc7823665d2a5a761049f7a5e963
Signed-off-by: rmylavarapu <rmylavarapu@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2260150
GVS: Gerrit_Virtual_Submit
Reviewed-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

drivers/gpu/nvgpu/common/pmu/perf/vfe_var.h

@@ -23,18 +23,6 @@
 #ifndef NVGPU_PERF_VFE_VAR_H
 #define NVGPU_PERF_VFE_VAR_H
 
-#include <nvgpu/boardobjgrp.h>
-#include <nvgpu/boardobjgrp_e32.h>
-#include <nvgpu/boardobjgrp_e255.h>
-#include <nvgpu/pmu/pmuif/nvgpu_cmdif.h>
-
-#define VFE_VAR_GET(_pperf, _idx)                                              \
-	((struct vfe_var)BOARDOBJGRP_OBJ_GET_BY_IDX(                           \
-	&((_pperf)->vfe.vars.super.super), (_idx)))
-
-#define VFE_VAR_IDX_IS_VALID(_pperf, _idx)                                     \
-	boardobjgrp_idxisvalid(&((_pperf)->vfe.vars.super.super), (_idx))
-
 struct vfe_var {
 	struct boardobj super;
 	u32 out_range_min;