arch/arm/src/stm32h7/hardware/stm32_dmamux.h: * Add missing defines DMAMUX_CCR_SPOL_NONE, DMAMUX_CCR_SPOL_RISING, DMAMUX_CCR_SPOL_FALLING, and DMAMUX_CCR_SPOL_BOTH. * Fix nxstyle errors.
arch/arm/src/stm32h7/hardware/stm32_dmamux.h: * Add missing defines DMAMUX_CCR_SPOL_NONE, DMAMUX_CCR_SPOL_RISING, DMAMUX_CCR_SPOL_FALLING, and DMAMUX_CCR_SPOL_BOTH. * Fix nxstyle errors.