MLK-18151-1 dts: mx7d: Update imx7d dts and binding files

MLK-18151-1 dts: mx7d: Update imx7d dts and binding files

Porting the the imx7d dtsi, dts files and binding files from 5.4.y kernel
(359d8f37b464afea3718796fdd6eb27b0d2df8b1)

New dts files are added to support GPMI-WEIM, RevA boards.

Changes in DTS and DTSi:
1. Add USB alias
2. Modify the SPI alias for qspi
3. Disable USDHC2 since it is for SDIO
4. Add i2c force idle support pins
5. Add back mmc alias by comparing with 2019.04.
6. Update clock, pin and reset binding files
7. Update QSPI only support 1 bit mode, remove RX/TX 4 bit mode

Signed-off-by: Ye Li <ye.li@nxp.com>
(cherry picked from commit 5feb51de9b4ddde2bf6c44f18320ba262f424b7c)
(cherry picked from commit ee0ebdd3ef40ca1ebd80287a8c4bc5f2c772f5dd)