MLK-21829 dts: imx8qxp: Update DTSi files and binding header files

MLK-21829 dts: imx8qxp: Update DTSi files and binding header files

Update the imx8qxp/dx/dxp DTSi files from imx_v2019.04 u-boot

Add extra support used in u-boot:
1. Add alias for FSPI nodes
2. Add GPIO alias which is used as seq number in u-boot DM GPIO driver.
3. Add i2c alias for i2c0 to i2c3.
4. Add i2c alias for mipi0/mipi1 i2c0.
5. Add "u-boot,dm-pre-reloc" to thermal node in QXP DTSi
6. Add USB alias for OTG and USB3 ports, add USB3 reg-name
7. Add APBH-DMA clock to GPMI node

Signed-off-by: Ye Li <ye.li@nxp.com>
(cherry picked from commit 4c908a8f2103cd99bf07aac62d7a9742fd326441)
(cherry picked from commit 616fa7607dffc255a29e9ff857489e83b293b9b9)