adi-hdmi-load: don't load fpga iic driver

The PS I2C controller is now being used, so don't load the driver
for the fpga implemented i2c periferal.
Configure kernel for PS IIC controller

Adjust config to match kernel dts
Update kernel srcrev.
FPGA: Upgrade to new zedboard design
Get FSBL for bootloader from design (binary)

Just download the FSBL, for now, so that no manual labor is needed
to build a working image.