gpu: nvgpu: update static pg support for pre-si

- On pre-silicon platform, static pg will be
  done by nvgpu driver. For this, retain structs
  and HALs of static pg.
- Add the static pg support under pre-silicon code.
- On silicon, the static pg will be done by BPMP.
- Rename variables used in static pg for better
  readability and consistency

Bug 200768322
JIRA NVGPU-6433

Change-Id: Ib31c0f83b751c2b1563a36bd51af78a0bd12a117
Signed-off-by: Divya <dsinghatwari@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2594801
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>

drivers/gpu/nvgpu/hal/init/hal_ga10b.c

@@ -246,7 +246,7 @@
 #include "hal/fifo/channel_gv11b.h"
 #include "hal/fifo/channel_ga10b.h"
 
-#ifdef CONFIG_NVGPU_TPC_POWERGATE
+#ifdef CONFIG_NVGPU_STATIC_POWERGATE
 #include "hal/tpc/tpc_gv11b.h"
 #endif
 
@@ -1631,10 +1631,19 @@ static const struct gops_top ga10b_ops_top = {
 	.get_num_lce = gv11b_top_get_num_lce,
 };
 
-#ifdef CONFIG_NVGPU_TPC_POWERGATE
-static const struct gops_tpc ga10b_ops_tpc = {
-	.init_tpc_powergate = gv11b_tpc_powergate,
-	.tpc_gr_pg = gv11b_gr_pg_tpc,
+#ifdef CONFIG_NVGPU_STATIC_POWERGATE
+static const struct gops_tpc_pg ga10b_ops_tpc_pg = {
+	/*
+	 * HALs for static-pg will be updated
+	 * for pre-silicon platform during HAL init.
+	 * For silicon, static-pg feature related settings
+	 * will be taken care of by BPMP.
+	 * Silicon: assigining the HALs to NULL.
+	 * Pre-Silicon: To-do JIRA-NVGPU-7112
+	 *              to add these HALs
+	 */
+	.init_tpc_pg = NULL,
+	.tpc_pg = NULL,
 };
 #endif