b_u585i_iot02a : update comments flash_layout.h

Fixed an inconsistency in a comment.(8KB data slots are not mentioned
in the primary and secondary slot for secure and no-secure imaging)

Change-Id: I0fc2e6884f589edf81b487f2435ad79960a3f954
Signed-off-by: Ahmad EL JOUAID <ahmad.eljouaid@st.com>
1 file changed