uboot-imx

net: zynq_gem: Initialize val variable in zynq_gem_miiphy_read()

phyread can timeout and val will contain random value. Initialize it to
zero not to report random value in case of error.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>