sb_firmware: shorter console messages
sb_firmware: shorter console messages

Reduced console log messages

BUG=chrome-os-partner:36310
BRANCH=none
TEST=Compile Only

Change-Id: I0e30a3094d77673a5fd238efed3851a726fdcdb6
Signed-off-by: Sheng-Liang Song <20a24593f82e573953076a0eeaf8f3cfb817a534@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/254931
Reviewed-by: Bernie Thompson <88a16a105b67ec86732da208bff06a7d4d211801@chromium.org>
Reviewed-by: Shawn N <5259333ce42e3ace6a73988cec7115ed9d3a661a@chromium.org>
Commit-Queue: Bernie Thompson <88a16a105b67ec86732da208bff06a7d4d211801@chromium.org>

md5555/ec,eatbyte/chromium-ec,akappy7/ChromeOS_EC_LED_Diagnostics,fourier49/BZ_DEV_EC,coreboot/chrome-ec,coreboot/chrome-ec,md5555/ec,md5555/ec,akappy7/ChromeOS_EC_LED_Diagnostics,fourier49/BZ_DEV_EC,coreboot/chrome-ec,fourier49/BZ_DEV_EC,coreboot/chrome-ec,fourier49/BZ_DEV_EC,fourier49/BIZ_EC,md5555/ec,akappy7/ChromeOS_EC_LED_Diagnostics,fourier49/BIZ_EC,fourier49/BIZ_EC,akappy7/ChromeOS_EC_LED_Diagnostics,fourier49/BIZ_EC,coreboot/chrome-ec,coreboot/chrome-ec,akappy7/ChromeOS_EC_LED_Diagnostics,eatbyte/chromium-ec,eatbyte/chromium-ec,eatbyte/chromium-ec