RDMA/irdma: Remove fixed 1 ms delay during AH wait loop

RDMA/irdma: Remove fixed 1 ms delay during AH wait loop

The AH CQP command wait loop executes in an atomic context and was
using a fixed 1 ms delay. Since many AH create commands can complete
much faster than 1 ms, use poll_timeout_us_atomic with a 1 us delay.

Also, use the timeout value indicated during the capability exchange
rather than a hard-coded value.

Signed-off-by: Jacob Moroni <jmoroni@google.com>
Link: https://patch.msgid.link/20260105180550.2907858-1-jmoroni@google.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>