Prepare v2026.04-rc5

Prepare v2026.04-rc4

Prepare v2026.04-rc3

Prepare v2026.04-rc2

- Add stm32mp21 keys in cmd_stm32key command

- Add support for power supplies in stusb160x driver
- Add clock provider for TXBYTE and DSI PHY clocks in stm32_dsi driver
- fastboot: only dequeue IN requests that has been queued
- QSPI/OSPI indirect mode throughput optimization
- Migrate U-Boot bootph-all DT properties to kernel DT.
- Use CCF for usb2phy clock provider in phy-stm32-usb2phy driver
- Minor fixes

Prepare v2026.04-rc1

Prepare v2026.01

Prepare v2026.01-rc5

Prepare v2026.01-rc3

Prepare v2026.01-rc2