fpsensor: Return correct error code for console command
fpsensor: Return correct error code for console command

Console commands return different error code types than host commands.
When the host command return value is returned for a console command,
the error message that is printed on the console is wrong, which is
confusing.

BRANCH=none
BUG=chromium:978078
TEST="syslock" in hatch FP console so system_is_locked returns true
     "fpcapture" in hatch FP console => Access Denied
     "fpenroll" in hatch FP console  => Access Denied

Change-Id: I18dbc093011743d4a9469eb5843c1464496bdd53
Signed-off-by: Tom Hughes <fc5c12f30a5ed2baa0581f44ee14ad1eb7b20d83@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1674049
Reviewed-by: Nicolas Norvez <3001a977f47a2bc94ec05551872e2ce88b323556@chromium.org>

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