feat(st-clock): allow aarch64 compilation of STGEN functions

A new local function is created to set STGEN counter value,
that will deal with __aarch64__ flag. And the function
stm32mp_stgen_get_counter is adapted for __aarch64__.

Change-Id: I53c21ad11ba5085611a028790e1decbe5994ae50
Signed-off-by: Yann Gautier <yann.gautier@st.com>
1 file changed