net/txgbe: fix mailbox interface calls

net/txgbe: fix mailbox interface calls

For different devices, the mailbox flow between software and firmware is
different. There are several mailbox commands in the txgbe driver, but only
txgbe_hic_sr_read() was changed to use the new flow.

It leads to other mailbox commands timeout for Amber-Lite devices, which
is required to use the new flow. So this patch fills in the missing part.

For the sake of code tidy, txgbe_hic_sr_read() should change to use the
locked function txgbe_host_interface_command(), and this function could
be change to pointer in struct txgbe_mbx_info for different devices.

Fixes: 6a139ade82e7 ("net/txgbe: add new SW-FW mailbox interface")
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>