Remove some extensions from .gitignore
Remove some extensions from .gitignore

Since build output is in build/ we don't really need to have *.bin (and
others) excluded throughout the source tree. This change allows us to
check in .bin files without warnings.

BUG=none
BRANCH=snow,link
TEST=manual
$ git status
- see that we still have no stray files reported

$ git add test/test-matrix.bin
- see that there is no warning given now

Change-Id: Ia71c5c2b89c3f0eef5098c86c701cb34f666e164
Signed-off-by: Simon Glass <c00b0378376498bd9cd974c388df8854c0131d27@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/34632
Reviewed-by: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>

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