This patch removes the extra compatibility string "st,stm32-usart" to
avoid confusion, save some time & space.
Signed-off-by: NVikas Manocha <vikas.manocha@st.com>
Reviewed-by: NPatrice Chotard <patrice.chotard@st.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>