Documentation/stm32h5: WWDG is supported.

WWDG is one of the supported stm32h5 peripherals
and has its own implementation file.

Signed-off-by: Liam Howatt <liamhowatt@geotab.com>

Author: liam-geotab

Documentation/guides/stm32_ports.rst

@@ -584,6 +584,7 @@ SPI/I2S       to be done    arch/arm/src/stm32h5/stm32_spi.c
 TIM           to be done    arch/arm/src/stm32h5/stm32_tim.c       
 USART/LPUART  v3            arch/arm/src/stm32h5/stm32_serial.c    
 USB           FS            arch/arm/src/stm32h5/stm32_usbfs.c     
+WWDG          v1            arch/arm/src/stm32h7/stm32_wwdg.c      
 LPTIM         n/a           arch/arm/src/stm32h5/stm32_lptim.c     
 PULSECOUNT    n/a           arch/arm/src/common/stm32/stm32_pulsecount.c
 PWM           n/a           arch/arm/src/stm32h5/stm32_pwm.c       

Documentation/platforms/arm/stm32h5/index.rst

@@ -82,7 +82,7 @@ SAI         No
 TAMP        No
 UCPD        No
 VREFBUF     No
-WWDG        No
+WWDG        Yes
 
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