fix(stm32mp2): correct typo in definition header

Fix a typo about the platform in a comment (STM32MP2 instead
of STM32MP1).

Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Change-Id: I6a58b659d97d7143e277dea57d4eede7729092bc
1 file changed