brya: tune fan parameters
brya: tune fan parameters

This tunes the fan parameters for the brya prototype fan. These are
temporary parameters until a real fan is available.

BRANCH=none
BUG=b:173575131,b:180681346
TEST=observed fan speeds using EC CLI

Change-Id: I74c1044c56a0ab7374f0fe52a757c33ede2aaa08
Signed-off-by: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2722553
Reviewed-by: Keith Short <f6d578f97033c25f1206cb57d52f358974c82954@chromium.org>

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