staging: et131x: Remove unused et131x_adapter struct members

These two adapter struct members are not used, remove them.

Signed-off-by: Mark Einon <mark.einon@gmail.com>
staging: et131x: Remove unused MP_TCB defines

These two defines are not used, so remove them.

Signed-off-by: Mark Einon <mark.einon@gmail.com>
staging: et131x: Remove unused ce_stats struct member

This ce_stats struct member is no longer used. Remove it.

Signed-off-by: Mark Einon <mark.einon@gmail.com>
staging: et131x: Reduce split lines in et131x_rx_dma_memory_alloc()

Modify temporary variables so that split lines can be reduced:

index -> k
fbr_tmp_physaddr -> fbr_physaddr

Signed-off-by: Mark Einon <mark.einon@gmail.com>
staging: et131x: Reduce split lines by renaming some psr variables

Modify some packet status ring associated variables to save a few
split lines:

pktstat_ringsize -> psr_size
psr_num_entries -> psr_entries
index -> ii

Signed-off-by: Mark Einon <mark.einon@gmail.com>
staging: et131x: Use braces on all arms of if/else in et131x_handle_recv_pkts

The 'if' blocks have braces, so the 'else' blocks should too.

Signed-off-by: Mark Einon <mark.einon@gmail.com>