Merge tag 'omap-for-v4.20/omap1-fix-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

Fix for omap1 ams-delta irq

We need to use IRQ_NOTCONNECTED instead of -EINVAL for
ams_delta_modem_ports irq.

* tag 'omap-for-v4.20/omap1-fix-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP1: ams-delta: Fix impossible .irq < 0
Signed-off-by: Olof Johansson <olof@lixom.net>