gianfar: Revert BQL support in Gianfar

Remove BQL support from Gianfar. The original upstream
commit that added BQL to Gianfar does not revert cleanly:
"d8a0f1b gianfar: Add support for byte queue limits."

BQL has been integrated in Gianfar by the upstream comunity
with no clear reason why would it be required / how would it
benefit to this particular driver. Only a few drivers have it
integrated. BQL adds processing overhead to the Tx path and
potential functional issues as it may stop the transmission,
which could result in tx timeout.

Change-Id: I71e0a99d9616bf86dd98c795a927c89f881b4b08
Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Reviewed-on: http://git.am.freescale.net:8181/12254
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Jianhua Xie <jianhua.xie@freescale.com>
Reviewed-by: Jose Rivera <German.Rivera@freescale.com>

0 files changed, 0 insertions, 0 deletions