gpu: nvgpu: handle chip specific erratas

Currently, there are few chip specific erratas present in nvgpu code.
For better traceability of the erratas and corresponding fixes,
introduce flags to indicate existing erratas on a chip. These flags
decide if a corresponding solution is applied to the chip(s).

This patch introduces below functions to handle errata flags:
- nvgpu_init_errata_flags
- nvgpu_set_errata
- nvgpu_is_errata_present
- nvgpu_print_errata_flags
- nvgpu_free_errata_flags

nvgpu_print_errata_flags: print below details of erratas present in chip
1. errata flag name
2. chip where the errata was first discovered
3. short description of the errata

Flags corresponding to erratas present in a chip are set during chip hal
init sequence.

JIRA NVGPU-6510

Change-Id: Id5a8fb627222ac0a585aba071af052950f4de965
Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2498095
Reviewed-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-by: Vaibhav Kachore <vkachore@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit

libs/dgpu/libnvgpu-drv-dgpu_safe.export

@@ -500,6 +500,7 @@ nvgpu_gr_suspend
 nvgpu_gr_sw_ready
 nvgpu_has_syncpoints
 nvgpu_init_enabled_flags
+nvgpu_init_errata_flags
 nvgpu_init_hal
 nvgpu_init_ltc_support
 nvgpu_init_mm_support
@@ -510,6 +511,7 @@ nvgpu_iommuable
 nvgpu_free_inst_block
 nvgpu_inst_block_ptr
 nvgpu_is_enabled
+nvgpu_is_errata_present
 nvgpu_kcalloc_impl
 nvgpu_kfree_impl
 nvgpu_kmalloc_impl
@@ -703,6 +705,7 @@ nvgpu_tsg_unbind_channel_check_hw_state
 nvgpu_tsg_unbind_channel_check_ctx_reload
 nvgpu_set_bit
 nvgpu_set_enabled
+nvgpu_set_errata
 nvgpu_set_power_state
 nvgpu_set_pte
 nvgpu_sgt_alignment

libs/igpu/libnvgpu-drv-igpu_safe.export

@@ -515,6 +515,7 @@ nvgpu_gr_suspend
 nvgpu_gr_sw_ready
 nvgpu_has_syncpoints
 nvgpu_init_enabled_flags
+nvgpu_init_errata_flags
 nvgpu_init_fb_support
 nvgpu_init_hal
 nvgpu_init_ltc_support
@@ -526,6 +527,7 @@ nvgpu_iommuable
 nvgpu_free_inst_block
 nvgpu_inst_block_ptr
 nvgpu_is_enabled
+nvgpu_is_errata_present
 nvgpu_kcalloc_impl
 nvgpu_kfree_impl
 nvgpu_kmalloc_impl
@@ -719,6 +721,7 @@ nvgpu_tsg_unbind_channel_check_hw_state
 nvgpu_tsg_unbind_channel_check_ctx_reload
 nvgpu_set_bit
 nvgpu_set_enabled
+nvgpu_set_errata
 nvgpu_set_power_state
 nvgpu_set_pte
 nvgpu_sgt_alignment