volteer: Increase I2C bus speed to 1 MHz for USB PD
volteer: Increase I2C bus speed to 1 MHz for USB PD

Increase the I2C bus speed to 1 MHz for the USB C0 and USB C1 buses.

BUG=b:144863533, b:149096109
BRANCH=none
TEST=make buildall
TEST=verify I2C device list on USB C0 and USB C1 buses.

Change-Id: I4b66f49f0f9050c0db7005abc85282db9bfd0cdb
Signed-off-by: Keith Short <f6d578f97033c25f1206cb57d52f358974c82954@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2047623
Reviewed-by: Daisuke Nojiri <fd5f93af191bf7e8f73ea71cc3c0f66b41b1dd49@chromium.org>

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