trogdor: Fix macro value enclosure
The value should be enclosed in parentheses.
BRANCH=Trogdor
TEST=No PRESUBMIT error.
EC_HOST_EVENT_MASK(EC_HOST_EVENT_AC_DISCONNECTED) | \
EC_HOST_EVENT_MASK(EC_HOST_EVENT_HANG_DETECT) | \
EC_HOST_EVENT_MASK(EC_HOST_EVENT_RTC) | \
- EC_HOST_EVENT_MASK(EC_HOST_EVENT_MODE_CHANGE)) | \
- EC_HOST_EVENT_MASK(EC_HOST_EVENT_DEVICE)
+ EC_HOST_EVENT_MASK(EC_HOST_EVENT_MODE_CHANGE) | \
+ EC_HOST_EVENT_MASK(EC_HOST_EVENT_DEVICE))
/* And the MKBP events */
#ifdef HAS_TASK_KEYSCAN
