eldrid: add support CONFIG_USB_PD_EXTENDED_MESSAGES
eldrid: add support CONFIG_USB_PD_EXTENDED_MESSAGES

Eldrid support PD 3.0, so remove undef to support related commend.

BUG=b:175519100
BRANCH=firmware-volteer-13521.B-master
TEST=make buildall

Signed-off-by: Scott Chao <8cefa9751fac9aaa897ba1213763a96ba8dbd20d@wistron.corp-partner.google.com>
Change-Id: Ie0121e213a071ed1346c34486911ecb41baa9805
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2594728
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