poppy: Return early from base_detect_change if status is unchanged
poppy: Return early from base_detect_change if status is unchanged

If current status is the same as requested state, then return early
from base_detect_change without taking any action.

BUG=b:64460667
BRANCH=None
TEST=make -j buildall

Change-Id: I3c403739a2e5c43f31fe77b5633927cf49b974eb
Signed-off-by: Furquan Shaikh <6be5c96c464778f89679b1062a2e0a6af93d2aa5@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/625243
Reviewed-by: Aaron Durbin <af0622ab041e8b0f8e5819838dcc93898196e71f@chromium.org>
Reviewed-by: Nicolas Boichat <f3daba1cdc403799935674d3cd4b0e5bd1804232@chromium.org>

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