zephyr: herobrine: enable 1Mhz I2C speed for TCPC chips
zephyr: herobrine: enable 1Mhz I2C speed for TCPC chips

Once changing I2C speed is possible in runtime, reenable
1MHz(I2C_BITRATE_FAST_PLUS) for the TCPC ports.

Also, add remote-port property to named-i2c-port nodes in dts to define
how to access a desired port. It is done based on an enum in
registers-npcx9.h file.

BUG=b:201408942
TEST=zmake testall & Verify PD works on herobrine
BRANCH=main

Signed-off-by: Dawid Niedzwiecki <73bc8c219b84b29e82d4338ec2e55b540c845bc6@semihalf.com>
Change-Id: Ie304bd6ad38fd8c7f6b33b3de8a97c175d9edf28
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3269840
Tested-by: Keith Short <f6d578f97033c25f1206cb57d52f358974c82954@chromium.org>
Reviewed-by: Wai-Hong Tam <04b587fdf5845741a0c5a8b9cd59ca72d73ef8fc@google.com>
Commit-Queue: Keith Short <f6d578f97033c25f1206cb57d52f358974c82954@chromium.org>

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