fruitpie: Fix default OSPEEDR reg settings for PB15.
fruitpie: Fix default OSPEEDR reg settings for PB15.

OSPEEDR cfg for PB15 was inadvertently set to '01' for PB15 (should be
'00').  Not sure it causes any harm but shouldn't be set according to
comment which is speeding up output pins on SPI interface PB12-14
only.

BRANCH=none
BUG=none
TEST=manual, compiles, boots, talks PD w/ samus_pd.

Change-Id: Ibc2ec1c427a2c3c92ffdf424b668752b1c0b0032
Signed-off-by: Todd Broch <035f5b1f817cbb94019cec357b99778115602b63@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/217963
Reviewed-by: Vic Yang <5fd92abeee651458f98e2856f4f200ee971cee4d@chromium.org>

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