fix(st-clock): disabling CKPER clock is not functional on stm32mp13

The mask used to configure the CKPER MUX was wrong and unnecessary.

Change-Id: I40098f2a27b9e5ba8706ab5377d23f578c09838b
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@foss.st.com>
1 file changed