ARM: STM32: Add USART serial driver

No DMA support for now.

Signed-off-by: Andreas Färber <afaerber@suse.de>
ARM: dts: Add USART nodes to STM32F429

Signed-off-by: Andreas Färber <afaerber@suse.de>
ARM: dts: Enable USART3 for STM32F429-Discovery

Update bootargs to use it as console.

Signed-off-by: Andreas Färber <afaerber@suse.de>
ARM: STM32: Implement clock source and clock events [WIP]
ARM: dts: Add TIM nodes to STM32F429

Signed-off-by: Andreas Färber <afaerber@suse.de>
HACK: ARM: dts: Add SysTick node to STM32F429

Signed-off-by: Andreas Färber <afaerber@suse.de>
Kconfig attempt

Signed-off-by: Andreas Färber <afaerber@suse.de>
Extend command line

Signed-off-by: Andreas Färber <afaerber@suse.de>
fbdev: Add driver for STM32F429

Signed-off-by: Andreas Färber <afaerber@suse.de>
ARM: dts: Add LTDC node to STM32F429

Signed-off-by: Andreas Färber <afaerber@suse.de>
ARM: dts: Reserve framebuffer for STM32F429

Signed-off-by: Andreas Färber <afaerber@suse.de>