common: Fix Oppo brand detection

Change-Id: I38cf5c65277f44f2b70d58b7418694fefc3cb6fd
Automatic translation import

Change-Id: Ia2e3ac383ce772a539515210866fe66b85465437
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_device_oppo_common into kk_mkt