bnxt_en: Avoid unnecessary NVM_GET_DEV_INFO cmd error log on VFs.

VFs do not have access permissions to issue NVM_GET_DEV_INFO
firmware command.

Fixes: 4933f675 ("bnxt_en: Add bnxt_hwrm_nvm_get_dev_info() to query NVM info.")
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>