fix(stm32mp2): set PLAT_MAX_PWR_LVL to one

Set maximum power level to 1 as power management isn't implemented yet.

Change-Id: I26cefbb5e199944d371bf06a76b2c41f73d38585
Signed-off-by: Maxime Méré <maxime.mere@foss.st.com>
1 file changed