arm64: dts: renesas: Add EK874 board with idk-2121wr display support

commit ae56c940 upstream.

The EK874 is advertised as compatible with panel IDK-2121WR from
Advantech, however the panel isn't sold alongside the board.
A new dts, adding everything that's required to get the panel to
to work with the EK874, is the most convenient way to support the
EK874 when it's connected to the IDK-2121WR.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/1576590361-28244-7-git-send-email-fabrizio.castro@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Signed-off-by: Pavel Machek <pavel@denx.de>
20 jobs for ci/pavel/linux-test in 36 minutes and 14 seconds (queued for 26 seconds)
Status Name Job ID Coverage
  Build
passed build:arm64_moxa_eds_defconfig #651679480

00:11:29

passed build:arm64_renesas_defconfig #651679481

00:10:53

passed build:arm_cip_bbb_defconfig #651679472

00:12:20

passed build:arm_hitachi_cyclonev_defconfig #651679474

00:10:52

passed build:arm_hitachi_omap_defconfig #651679475

00:13:36

passed build:arm_moxa_mxc_defconfig #651679476

00:16:37

passed build:arm_renesas_shmobile_defconfig #651679477

00:10:00

passed build:arm_siemens_de0-nano-soc_defconfig #651679478

00:10:38

passed build:arm_siemens_imx6.config #651679479

00:12:20

passed build:x86_cip_qemu_defconfig #651679482

00:11:44

passed build:x86_plathome_obsvx2.config #651679483

00:15:43

passed build:x86_siemens_iot2000.config #651679484

00:12:58

passed build:x86_siemens_ipc227e_defconfig #651679485

00:16:16

passed build:x86_siemens_server_defconfig #651679486

00:13:00

passed build:x86_toshiba_atom_baytrail_cip.config #651679487

00:09:53

 
  Test
passed test:arm64_renesas_defconfig #651679490
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00:06:28

passed test:arm_renesas_shmobile_defconfig #651679488
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00:06:32

passed test:arm_siemens_de0-nano-soc_defconfig #651679489
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00:09:54

passed test:x86_cip_qemu_defconfig #651679491
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00:04:47

passed test:x86_siemens_ipc227e_defconfig #651679492
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00:19:42