ARM: dts: stm32: fix i2c node typo in stm32h743, update dmamux1 register

Replace upper case by lower case in i2c nodes name.
update dmamux1 register range.

Signed-off-by: dillon min <dillon.minfei@gmail.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
1 file changed