FROMLIST: arm64: dts: qcom: qcs6490-rb3gen2: Enable USB2 controller Micro-USB OTG

[akakum-qualcomm]

Enable the secondary USB controller (USB2) and its High-Speed PHY to
support OTG functionality via a Micro-USB connector.

Define a dedicated 'usb2-connector' node using the 'gpio-usb-b-connector'
compatible to handle ID and VBUS detection. Link this connector to the
DWC3 controller via OF graph ports to satisfy schema requirements and
enable role switching.

Specific hardware configuration:
- ID pin: TLMM 61
- VBUS detection: PM7325 GPIO 9
- VBUS supply: Fixed regulator controlled by TLMM 63
- Configure &usb_2 in OTG mode with role switching enabled.
- Define a gpio-usb-b-connector node for Micro-USB support, mapping the
  ID pin to TLMM 61 and VBUS detection to PM7325 GPIO 9.
- Add the 'vdd_micro_usb_vbus' fixed regulator (controlled by TLMM 63) to
  supply VBUS to the connector.
- Add the 'usb2_id_detect' pinctrl state to configure GPIO 61 for ID
  detection.
- Enable &usb_2_hsphy and populate necessary voltage supplies (VDDA PLL,
  VDDA 1.8V, VDDA 3.3V).

Link: https://lore.kernel.org/all/c3on5e56hqipudpt7uyam2cples3rhadpz324zeg7nebczsglt@bxuy5jzrxjc7/
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Akash Kumar <akash.kumar@oss.qualcomm.com>