net/bnxt: fix return values to standard error codes

net/bnxt: fix return values to standard error codes

Fixed the return values of few routines to return standard error code.
Also fixed few error logs to more meaningful one.

Fixes: 804e746c7b73 ("net/bnxt: add hardware resource manager init code")
Fixes: e3d8f1e6a665 ("net/bnxt: cache address of doorbell to subsequent access")
Fixes: 19e6af01bb36 ("net/bnxt: support get/set EEPROM")
Fixes: b7435d660a8c ("net/bnxt: add ntuple filtering support")
Cc: stable@dpdk.org
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>