i2c: xiic: Add timeout to the rx fifo wait loop

Add timeout to the rx fifo empty wait loop. Also check for the return
value for xiic_reinit and pass it to xiic_start_xfer.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>