Add AIM300 AIoT Carrier board DTS support, including usb, UART, PCIe,
I2C functions support.
Here is a diagram of AIM300 AIoT Carrie Board and SoM
 +--------------------------------------------------+
 |             AIM300 AIOT Carrier Board            |
 |                                                  |
 |           +-----------------+                    |
 |power----->| Fixed regulator |---------+          |
 |           +-----------------+         |          |
 |                                       |          |
 |                                       v VPH_PWR  |
 | +----------------------------------------------+ |
 | |                          AIM300 SOM |        | |
 | |                                     |VPH_PWR | |
 | |                                     v        | |
 | |   +-------+       +--------+     +------+    | |
 | |   | UFS   |       | QCS8550|     |PMIC  |    | |
 | |   +-------+       +--------+     +------+    | |
 | |                                              | |
 | +----------------------------------------------+ |
 |                                                  |
 |                    +----+          +------+      |
 |                    |USB |          | UART |      |
 |                    +----+          +------+      |
 +--------------------------------------------------+
Co-developed-by: Qiang Yu <quic_qianyu@quicinc.com>
Signed-off-by: Qiang Yu <quic_qianyu@quicinc.com>
Co-developed-by: Ziyue Zhang <quic_ziyuzhan@quicinc.com>
Signed-off-by: Ziyue Zhang <quic_ziyuzhan@quicinc.com>
Signed-off-by: Tengfei Fan <quic_tengfan@quicinc.com>
Link: https://lore.kernel.org/r/20240618072202.2516025-5-quic_tengfan@quicinc.comSigned-off-by: Bjorn Andersson <andersson@kernel.org>