revert(plat/xilinx): add timeout while waiting for IPI Ack

This reverts commit 4d9b9b2352f9a67849faf2d4484f5fcdd2788b01.

Timeout in IPI ack was added for functional safety reason.
Functional safety is not criteria for ATF. However, this
creates issues for APIs that take long or non-deterministic
duration like FPGA load. So revert this patch for now to fix
FPGA loading issue. Need to add support for non-blocking API
for FPGA loading with callback when API completes.

Signed-off-by: Rajan Vaja <>
Signed-off-by: Venkatesh Yadav Abbarapu <>
Change-Id: I940e798f1e2f7d0dfca1da5caaf8b94036d440c6
4 files changed