fireball: Correct manufacturer, htc to HTC

Change htc for fireball manufacter to HTC to make the string look
cleaner in Android Device Manager and Google Play Store (commonly
used by users), as well as any app that reads ro.product.manufacturer
from build.prop. Also, HTC styles their name in print as being
uppercase and generally have it uppercase in their stock ROMs.

Change-Id: I32b288df15b770361774ca8e74d1cdea6d5a04b5
(cherry picked from commit 9792ff2e8945b720f96d39c5b36771efe7ba457d)