stm32f0: Pinky: Fix power leak caused by SPI at startup
stm32f0: Pinky: Fix power leak caused by SPI at startup

Seems like we were setting outputs too early during boot, sometimes causing a
power leak. SPI should only turn on power levels more active than S3, not on the
S5->S3 transition.

BUG=chrome-os-partner:32824
BRANCH=None
TEST=Pinky powers on, Scope VCC33_PMUIO and VCC33_IO, note that they're smooth

Change-Id: I05c3622d124c2539222b883b895bc9092c5f0b12
Signed-off-by: Alexandru M Stan <1784cbba6d7675b1eba55eaefe41c7672ad9da3b@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/224508
Reviewed-by: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>

fourier49/BZ_DEV_EC,coreboot/chrome-ec,mtk09422/chromiumos-platform-ec,fourier49/BZ_DEV_EC,md5555/ec,longsleep/ec,md5555/ec,md5555/ec,coreboot/chrome-ec,akappy7/ChromeOS_EC_LED_Diagnostics,eatbyte/chromium-ec,akappy7/ChromeOS_EC_LED_Diagnostics,fourier49/BIZ_EC,mtk09422/chromiumos-platform-ec,akappy7/ChromeOS_EC_LED_Diagnostics,coreboot/chrome-ec,eatbyte/chromium-ec,eatbyte/chromium-ec,longsleep/ec,eatbyte/chromium-ec,fourier49/BZ_DEV_EC,fourier49/BIZ_EC,mtk09422/chromiumos-platform-ec,longsleep/ec,akappy7/ChromeOS_EC_LED_Diagnostics,longsleep/ec,coreboot/chrome-ec,coreboot/chrome-ec,md5555/ec,coreboot/chrome-ec,fourier49/BZ_DEV_EC,fourier49/BIZ_EC,mtk09422/chromiumos-platform-ec,fourier49/BIZ_EC,akappy7/ChromeOS_EC_LED_Diagnostics