[device] Modify configuration and add led_proc_init.soc (#4418)

- Modify configuration file path in sai.profile.
- Modify configuration file for as7726_32x.
- Add led_proc_init.soc and custom_led.bin

device/accton/x86_64-accton_as7726_32x-r0/Accton-AS7726-32X/sai.profile

@@ -1 +1 @@
-SAI_INIT_CONFIG_FILE=/etc/bcm/td3-as7726-32x100G.config.bcm
+SAI_INIT_CONFIG_FILE=/usr/share/sonic/hwsku/td3-as7726-32x100G.config.bcm

device/accton/x86_64-accton_as7726_32x-r0/Accton-AS7726-32X/td3-as7726-32x100G.config.bcm

@@ -11,26 +11,28 @@ mem_cache_enable=0
 
 l2_mem_entries=32768
 l3_mem_entries=16384
-fpem_mem_entries=131072
+fpem_mem_entries=16384
 l2xmsg_mode=1
 
 # Platform specfic
 bcm_num_cos=8
 bcm_stat_interval=2000000
 cdma_timeout_usec=3000000
+ifp_inports_support_enable=1
 ipv6_lpm_128b_enable=0x1
 l3_max_ecmp_mode=1
-#l3_alpm_enable=2
+l3_alpm_enable=2
 lpm_scaling_enable=0
 max_vp_lags=0
 miim_intr_enable=0
 module_64ports=1
+port_flex_enable=1
 schan_intr_enable=0
 stable_size=0x5500000
 tdma_timeout_usec=3000000
 skip_L2_USER_ENTRY=0
 bcm_tunnel_term_compatible_mode=1
-
+l3_alpm_ipv6_128b_bkt_rsvd=1
 phy_an_c73=1
 
 dport_map_port_1=1
@@ -100,10 +102,10 @@ portmap_115=113:100
 portmap_119=117:100
 portmap_123=121:100
 portmap_127=125:100
-portmap_66=129:10:m
-portmap_130=128:10:m
-portmap_65=130:10
-portmap_131=131:10
+#portmap_66=129:10:m
+#portmap_130=128:10:m
+#portmap_65=130:10
+#portmap_131=131:10
 
 phy_chain_rx_lane_map_physical{1.0}=0x1320
 phy_chain_rx_lane_map_physical{5.0}=0x0123

device/accton/x86_64-accton_as7726_32x-r0/led_proc_init.soc

@@ -0,0 +1,4 @@
+
+m0 load 0 0x3800 /usr/share/sonic/platform/custom_led.bin
+led auto on
+led start