Enabling compiler flag to detect identical branches in conditional finds:

[228/3418] Compiling C object
drivers/libtmp_rte_common_cnxk.a.p/common_cnxk_roc_cpt.c.o
../drivers/common/cnxk/roc_cpt.c: In function ‘cpt_get_blkaddr’:
../drivers/common/cnxk/roc_cpt.c:677:12: warning: this condition has identical
branches [-Wduplicated-branches]
  677 |         if (dev_is_vf(dev))
      |            ^


uint64_t
cpt_get_blkaddr(struct dev *dev)
{
        uint64_t reg;
        uint64_t off;

        /* Reading the discovery register to know which CPT is the LF
         * attached to. Assume CPT LF's of only one block are attached
         * to a pffunc.
         */
        if (dev_is_vf(dev))
                off = RVU_VF_BLOCK_ADDRX_DISC(RVU_BLOCK_ADDR_CPT1);
        else
                off = RVU_PF_BLOCK_ADDRX_DISC(RVU_BLOCK_ADDR_CPT1);

And many more.


[243/3418] Compiling C object
drivers/libtmp_rte_common_cnxk.a.p/common_cnxk_roc_nix_inl_dev.c.o
../drivers/common/cnxk/roc_nix_inl_dev.c: In function ‘nix_inl_nix_setup’:
../drivers/common/cnxk/roc_nix_inl_dev.c:833:17: warning: this condition has
identical branches [-Wduplicated-branches]
  833 |         else if (roc_model_is_cn10k())
      |                 ^
[246/3418] Compiling C object
drivers/libtmp_rte_common_cnxk.a.p/common_cnxk_roc_nix_inl.c.o
../drivers/common/cnxk/roc_nix_inl.c: In function
‘nix_inl_inb_ipsec_sa_tbl_setup’:
../drivers/common/cnxk/roc_nix_inl.c:426:17: warning: this condition has
identical branches [-Wduplicated-branches]
  426 |         else if (roc_model_is_cn10k())
      |                 ^
../drivers/common/cnxk/roc_nix_inl.c: In function ‘nix_inl_eng_caps_get’:
../drivers/common/cnxk/roc_nix_inl.c:1215:12: warning: this condition has
identical branches [-Wduplicated-branches]
 1215 |         if (roc_model_is_cn9k() || roc_model_is_cn10k())
      |            ^
../drivers/common/cnxk/roc_nix_inl.c: In function ‘roc_nix_inl_outb_init’:
../drivers/common/cnxk/roc_nix_inl.c:1616:17: warning: this condition has
identical branches [-Wduplicated-branches]
 1616 |         else if (roc_model_is_cn10k())
      |                 ^
[260/3418] Compiling C object
drivers/libtmp_rte_common_cnxk.a.p/common_cnxk_roc_nix_queue.c.o
../drivers/common/cnxk/roc_nix_queue.c: In function ‘roc_nix_cq_init’:
../drivers/common/cnxk/roc_nix_queue.c:1290:90: warning: this condition has
identical branches [-Wduplicated-branches]
 1290 |                         cq_ctx->lbp_frac = force_tail_drop ?
NIX_CQ_LBP_THRESH_FRAC_REF1 :
      |