arm: mach-stm32mp: Add newline to the MAC error message

Without newline, the error message appears for non prgrammed OTP boards
looks messsy. Hence add it to look more clean.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
1 file changed