vell: Update fan real rpm
vell: Update fan real rpm

BUG=b:216026302
BRANCH=none
TEST=make BOARD=vell

Signed-off-by: Devin Lu <052fe648504800b810f29702ef4f3db83fad68bf@quantatw.com>
Change-Id: I0dfefa4754eb9647f46ff05b422dff2cc74119b1
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3411684
Reviewed-by: caveh jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec