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The driver has code blocks for kernel push WQEs but does not
map the doorbell page rendering this mode non functional [1]

Remove code associated with this feature from the kernel fast
path as there is currently no plan of record to support this.

This also address a sparse issue reported by lkp.

drivers/infiniband/hw/irdma/uk.c:285:24: sparse: sparse: incorrect type in assignment (different base types) @@     expected bool [usertype] push_wqe:1 @@     got restricted __le32 [usertype] *push_db @@
drivers/infiniband/hw/irdma/uk.c:285:24: sparse:     expected bool [usertype] push_wqe:1
drivers/infiniband/hw/irdma/uk.c:285:24: sparse:     got restricted __le32 [usertype] *push_db
drivers/infiniband/hw/irdma/uk.c:386:24: sparse: sparse: incorrect type in assignment (different base types) @@     expected bool [usertype] push_wqe:1 @@     got restricted __le32 [usertype] *push_db @@

[1] https://lore.kernel.org/linux-rdma/20230815051809.GB22185@unreal/T/#t

Fixes: 272bba19 ("RDMA: Remove unnecessary ternary operators")
Fixes: 551c46ed

 ("RDMA/irdma: Add user/kernel shared libraries")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202308110251.BV6BcwUR-lkp@intel.com/

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Link: https://lore.kernel.org/r/20230816001209.1721-1-shiraz.saleem@intel.com

Signed-off-by: Leon Romanovsky <leon@kernel.org>