sfc: Fix TX queue numbering when separate_tx_channels=1
sfc: Fix TX queue numbering when separate_tx_channels=1

This option appears to have been broken by commit
8313aca38b3937947fffebca6e34bac8e24300c8 ('sfc: Allocate each channel
separately, along with its RX and TX queues').

Signed-off-by: Ben Hutchings <0672176982fbc629cc374f31a7a45ae1671abf90@solarflare.com>

KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs