Add WDT driver for K210 with support for both WDT0 and WDT1 peripherals.
This includes:
- Add k210_wdt.c and k210_wdt.h driver files with interrupt-based
watchdog timer functionality
- Add hardware register definitions in k210_wdt.h
- Add K210_WDT, K210_WDT0, K210_WDT1 Kconfig options
- Add memory map definitions for WDT0 (0x50400000) and WDT1 (0x50410000)
- Reorder WDT IRQ definitions (IRQ 21, 22) before UART0 (IRQ 33) in irq.h
- Add WDT initialization in board bringup for maix-bit
Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
078e7099b7