samus: Change the way host_set_single_event is used
samus: Change the way host_set_single_event is used

In order to avoid runtime 64-bit left shift, check for extpower and
add two separate calls to host_set_single_event rather than
calculating the parameter at runtime. This avoids the requirement of
runtime logical shift for 64-bit.

BUG=b:69329196
BRANCH=None
TEST=make -j BOARD=samus

Change-Id: I64cacf6253878ed7d69f6b17baeb6c27c470378a
Signed-off-by: Furquan Shaikh <6be5c96c464778f89679b1062a2e0a6af93d2aa5@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/771854
Reviewed-by: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>
Reviewed-by: Vincent Palatin <70a9964ec8fd10b0b08fcc8623c2add25ddf99ac@chromium.org>

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