imx: update i.MX8MQ device trees

This updates the i.MX8MQ device trees and, necessarily, also the
i.MX8MQ clock bindings.  These are taken verbatim from from the
Linux kernel version v5.4-rc2, which three small changes which
were already part of the previous device tree:

 * Keep the PSCI reserved memory range
 * Keep the alias for ethernet, so that the MAC address can be set
 * Keep the modified #include for the IOMUXC pins

Signed-off-by: Patrick Wildt <patrick@blueri.se>
Acked-by: Peng Fan <peng.fan@nxp.com>
diff --git a/configs/imx8mq_evk_defconfig b/configs/imx8mq_evk_defconfig
index f352f47..523dbf8 100644
--- a/configs/imx8mq_evk_defconfig
+++ b/configs/imx8mq_evk_defconfig
@@ -25,7 +25,7 @@
 CONFIG_CMD_EXT4_WRITE=y
 CONFIG_CMD_FAT=y
 CONFIG_OF_CONTROL=y
-CONFIG_DEFAULT_DEVICE_TREE="fsl-imx8mq-evk"
+CONFIG_DEFAULT_DEVICE_TREE="imx8mq-evk"
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_SAVED_DRAM_TIMING_BASE=0x40000000
 CONFIG_DM_GPIO=y