Update R40 .dts{,i} and dt-binding headers to current version from kernel.

Files taken from Linux 5.12-rc1 release
(commit fe07bfda2fb9cdef8a4d4008a409bb02f35f1bd8)

Signed-off-by: Ivan Uvarov <i.uvarov@cognitivepilot.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

This binding currently has a flags cell but it is not used. Make use of it
to create ACPI tables for interrupts.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>

This device tree has been extracted from v4.9 kernel

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

Import a copy of the dt-bindings/interrupt-controller/mips-gic.h header
from Linux, such that we can use device trees which include it without
modification.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>

These files are taken from Linux 3.14.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Stephen Warren <swarren@nvidia.com>