fix(st-ddr): move skipddc_dat definition

The skipddc_dat variable is only use at one place in dfixlat_program()
function. Move its definition and update there to avoid compilation
issues about variables being set but not used.

Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: I6b5273365f1da26773fc46f898362cb9af170506
1 file changed