sn5s330: Test PP FET enable failure handling
sn5s330: Test PP FET enable failure handling

Test handling failures when sn5s330_pp_fet_enable() returns an error
code at two points in the SN5S330 init function.

BRANCH=None
BUG=b:225245353
TEST=zmake -D configure --test test-drivers

Signed-off-by: Tristan Honscheid <1e17951ff5ffc8afe254954c03de64afef62fe52@google.com>
Change-Id: I9973bc2fa0eb0c71865407e3957b422fdc131a4e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3535002
Reviewed-by: Sam Hurst <500b4cddcd66abe3fe333e92c4c95d7f41e62e4e@google.com>

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