feat(st): search pinctrl node by compatible

Instead of searching pinctrl node with its name, search with its
compatible. This will be necessary before pin-controller name changes
to pinctrl due to kernel yaml changes.

Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: I00590414fa65e193c6a72941a372bcecac673f60
1 file changed