net: emacps: Fix XEMACPS_IXR_ALL_MASK

There is no use in enabling interrupts we never handle, so drop the
following bits from XEMACPS_IXR_ALL_MASK:

* 25, pdelay_resp_tx (PTP)
* 24, pdelay_req_tx (PTP)
* 23, pdelay_resp_rx (PTP)
* 22, pdelay_req_rx (PTP)
* 21, sync_tx (PTP)
* 20, delay_req_tx (PTP)
* 19, sync_rx (PTP)
* 18, delay_req_rx (PTP)

* 14, pause_tx (Pause)
* 13, pause_zero (Pause)
* 12, pause_nonzeroq_rx (Pause)

*  9, link_chng
*  8, reserved

Signed-off-by: Thomas Betker <thomas.betker@rohde-schwarz.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>