feat(st): update stm32 linker scripts

Remove an extra dot for the .data section.
Use FILL(0) instead of *(.data*). There is nothing there matching this
expression and was just use to have a filler. Use explicit FILL(0)
instead.

Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: Ib5fc7dcdfe2b34b6892602512b8ae4115d45f307
2 files changed