Mrbland: Remove CONFIG_DEVICE_EVENT DEFINE
Mrbland: Remove CONFIG_DEVICE_EVENT DEFINE

Follow homestar, mrbland doesn't have WLC and doesn't need it.

BRANCH=trogdor
BUG=None
TEST=make BOARD=mrbland

Signed-off-by: Siyu Qin <a9effbf15ecb10f317c5f91ee7586285c41ed8ef@huaqin.corp-partner.google.com>
Change-Id: Ia6d30344219b44df3f4e5aa3c5d4ae760c577edd
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3090228
Reviewed-by: Bob Moragues <f5049d5b5df4f96d121308a63d9e3c0dfa5ed2dc@chromium.org>
Reviewed-by: Wai-Hong Tam <04b587fdf5845741a0c5a8b9cd59ca72d73ef8fc@google.com>

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