xhci: Use msleep() instead of mdelay() for port status delay.

Use msleep() so that interrupts and other threads can occur during the
delay.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
build: Make sure romlayout.o is recompiled on Kconfig change.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Fix int 1589 calls when CONFIG_ENTRY_EXTRASTACK is enabled.

The int 1589 call is entered in real mode and returns in protected
mode.  However, the code to use the "extra stack" does not support
that.  Fix this by never using the "extra stack" on int 1589 calls.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
acpi: Fix acpi dsdt compile warning.

The _EJ0 method should not return a value.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>