arm64: dts: agilex5: add initial support for Intel Agilex5 SoCFPGA

Add the initial device tree files for Intel Agilex5 SoCFPGA platform.

Reviewed-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Niravkumar L Rabara <niravkumar.l.rabara@intel.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>

arm64: dts: intel: add device tree for n6000

Add a device tree for the n6000 instantiation of Agilex
Hard Processor System (HPS).

Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>

arm64: socfpga: merge Agilex and N5X into ARCH_INTEL_SOCFPGA

Agilex, N5X and Stratix 10 share all quite similar arm64 hard cores and
SoC-part. Up to a point that N5X uses the same DTSI as Agilex. From
the Linux kernel point of view these are flavors of the same
architecture so there is no need for three top-level arm64
architectures. Simplify this by merging all three architectures into
ARCH_INTEL_SOCFPGA and dropping the other ARCH* arm64 Kconfig entries.

The side effect is that the INTEL_STRATIX10_SERVICE will now be
available for both 32-bit and 64-bit Intel SoCFPGA, even though it is
used only for 64-bit.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>

arm64: dts: n5x: Add support for Intel's eASIC N5X platform

The Intel eASIC N5X platform shares the same register map as the Agilex
platform, thus, we can re-use the socfpga_agilex.dtsi as the base
DTSI.

Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>

arm64: dts: keembay: Add device tree for Keem Bay EVM board

Add initial device tree for Keem Bay EVM board. With this minimal device
tree the board boots fine using an initramfs image.

Link: https://lore.kernel.org/r/20200717090414.313530-6-daniele.alessandrelli@linux.intel.com
Reviewed-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Daniele Alessandrelli <daniele.alessandrelli@intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arm64: dts: add NAND board files for Stratix10 and Agilex

The Stratix10 and Agilex devkits support a separate NAND daughter card.
The NAND daughter card replaces the SDMMC slot that is on the default
daughter card thus requires a separate board dts file.

Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>

treewide: Add SPDX license identifier - Makefile/Kconfig

Add SPDX license identifiers to all Make/Kconfig files which:

- Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

GPL-2.0-only

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arm64: dts: agilex: Add initial support for Intel's Agilex SoCFPGA

Add the initial device tree files for Intel's Agilex SoCFPGA platform.

Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>