drm/amd/powerplay: sort feature status index by asic feature id for smu

before this change, the pp_feature sysfs show feature enable state by
logic feature id, it is not easy to read.
this change will sort pp_features show index by asic feature id.

before:
features high: 0x00000623 low: 0xb3cdaffb
00. DPM_PREFETCHER       ( 0) : enabeld
01. DPM_GFXCLK           ( 1) : enabeld
02. DPM_UCLK             ( 3) : enabeld
03. DPM_SOCCLK           ( 4) : enabeld
04. DPM_MP0CLK           ( 5) : enabeld
05. DPM_LINK             ( 6) : enabeld
06. DPM_DCEFCLK          ( 7) : enabeld
07. DS_GFXCLK            (10) : enabeld
08. DS_SOCCLK            (11) : enabeld
09. DS_LCLK              (12) : disabled
10. PPT                  (23) : enabeld
11. TDC                  (24) : enabeld
12. THERMAL              (33) : enabeld
13. RM                   (35) : disabled
......

after:
features high: 0x00000623 low: 0xb3cdaffb
00. DPM_PREFETCHER       ( 0) : enabeld
01. DPM_GFXCLK           ( 1) : enabeld
02. DPM_GFX_PACE         ( 2) : disabled
03. DPM_UCLK             ( 3) : enabeld
04. DPM_SOCCLK           ( 4) : enabeld
05. DPM_MP0CLK           ( 5) : enabeld
06. DPM_LINK             ( 6) : enabeld
07. DPM_DCEFCLK          ( 7) : enabeld
08. MEM_VDDCI_SCALING    ( 8) : enabeld
09. MEM_MVDD_SCALING     ( 9) : enabeld
10. DS_GFXCLK            (10) : enabeld
11. DS_SOCCLK            (11) : enabeld
12. DS_LCLK              (12) : disabled
13. DS_DCEFCLK           (13) : enabeld
......
Signed-off-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/amdgpu_smu.c

@@ -63,6 +63,8 @@ size_t smu_sys_get_pp_feature_mask(struct smu_context *smu, char *buf)
 	uint32_t feature_mask[2] = { 0 };
 	int32_t feature_index = 0;
 	uint32_t count = 0;
+	uint32_t sort_feature[SMU_FEATURE_COUNT];
+	uint64_t hw_feature_count = 0;
 
 	ret = smu_feature_get_enabled_mask(smu, feature_mask, 2);
 	if (ret)
@@ -75,11 +77,17 @@ size_t smu_sys_get_pp_feature_mask(struct smu_context *smu, char *buf)
 		feature_index = smu_feature_get_index(smu, i);
 		if (feature_index < 0)
 			continue;
+		sort_feature[feature_index] = i;
+		hw_feature_count++;
+	}
+
+	for (i = 0; i < hw_feature_count; i++) {
 		size += sprintf(buf + size, "%02d. %-20s (%2d) : %s\n",
 			       count++,
-			       smu_get_feature_name(smu, i),
-			       feature_index,
-			       !!smu_feature_is_enabled(smu, i) ? "enabeld" : "disabled");
+			       smu_get_feature_name(smu, sort_feature[i]),
+			       i,
+			       !!smu_feature_is_enabled(smu, sort_feature[i]) ?
+			       "enabeld" : "disabled");
 	}
 
 failed: