Merge branch 'mlxsw-VXLAN-and-firmware-flashing-fixes'

Ido Schimmel says:

====================
mlxsw: VXLAN and firmware flashing fixes

Patch #1 fixes firmware flashing failures by increasing the time period
after which the driver fails the transaction with the firmware. The
problem is explained in detail in the commit message.

Patch #2 adds a missing trap for decapsulated ARP packets. It is
necessary for VXLAN routing to work.

Patch #3 fixes a memory leak during driver reload caused by NULLing a
pointer before kfree().

Please consider patch #1 for 4.19.y
====================

Signed-off-by: David S. Miller <davem@davemloft.net>