ISIS now working in broadcom asic.

[Tim-741]

In SONiC build i get error: Feb 14 01:04:14.314218 AR5 ERR syncd#syncd: [none] SAI_API_HOSTIF:_brcm_sai_create_hostif_trap_validate:4056 Unknown trap type 0x2014 Feb 14 01:04:14.314237 AR5 ERR syncd#syncd: [none] SAI_API_HOSTIF:_brcm_sai_create_hostif_trap:4261 trap validate failed with error -15. Feb 14 01:04:14.314288 AR5 ERR syncd#syncd: [none] SAI_API_HOSTIF:brcm_sai_create_hostif_trap:1646 create hostif trap failed with error -15. Feb 14 01:04:14.314288 AR5 ERR syncd#syncd: :- sendApiResponse: api SAI_COMMON_API_CREATE failed in syncd mode: SAI_STATUS_NOT_IMPLEMENTED Feb 14 01:04:14.314575 AR5 ERR syncd#syncd: :- processQuadEvent: attr: SAI_HOSTIF_TRAP_ATTR_TRAP_TYPE: SAI_HOSTIF_TRAP_TYPE_ISIS Feb 14 01:04:14.314575 AR5 ERR syncd#syncd: :- processQuadEvent: attr: SAI_HOSTIF_TRAP_ATTR_TRAP_GROUP: oid:0x110000000005e6 Feb 14 01:04:14.314607 AR5 ERR syncd#syncd: :- processQuadEvent: attr: SAI_HOSTIF_TRAP_ATTR_PACKET_ACTION: SAI_PACKET_ACTION_TRAP Feb 14 01:04:14.314620 AR5 ERR syncd#syncd: :- processQuadEvent: attr: SAI_HOSTIF_TRAP_ATTR_TRAP_PRIORITY: 4