feat(imx8mn): add workaround for errata ERR050362

Port the workaround from the downstream imx-atf [1]:

| commit 1990081264f40822d1564f4562f05bbbc0c2941b
| Author: Ji Luo <ji.luo@nxp.com>
| Date:   Thu May 20 16:26:55 2021 +0800
|
|     MA-19071 imx8mn: workaround for errata ERR050362
|
|     Configure the force_incr programmable bit in GPV_5 of PL301_display,
|     which fixes partial write issue. This workaround was done in MCU FW
|     before, move it to TF-A now as MCU should not touch secure world.
|
|     Change-Id: I2e5bbc764640afeab6ac2f4b202939b59bd3b3f2
|     Signed-off-by: Ji Luo <ji.luo@nxp.com>

[1] https://github.com/nxp-imx/imx-atf.git

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Change-Id: Iaff5f1faa143204d64c075b288f8dd13eb2902d8
2 files changed