env: sf: avoid space in backend name

Remove space in ENV backend name for SPI Flash (SF)
to avoid issue with env select command.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
This commit is contained in:
Patrick Delaunay 2020-07-28 11:51:16 +02:00 committed by Tom Rini
parent 286fee5062
commit 22140d16e5