RDMA/cxgb3: Increase the max CQ depth

#define T3_MAX_PBL_SIZE 256

#define T3_MAX_RQ_SIZE 1024

#define T3_MAX_QP_DEPTH (T3_MAX_RQ_SIZE-1)

#define T3_MAX_CQ_DEPTH 8192

#define T3_MAX_CQ_DEPTH 262144

#define T3_MAX_NUM_STAG (1<<15)

#define T3_MAX_MR_SIZE 0x100000000ULL

#define T3_PAGESIZE_MASK 0xffff000  /* 4KB-128MB */