smdk4412-common: Don't build torch for devices without flash

For devices without a flash set TARGET_HAS_CAM_FLASH := false

Change-Id: I8fb1648f443abadd8677fd6780ba95a40c613cf0
Merge "smdk4412-common: Don't build torch for devices without flash" into cm-11.0
Revert "common.mk: Fix potential config issue"

This reverts commit 3e7adbeaa4440db97c9ff257808e62d56be03dc1.
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_device_samsung_smdk4412-common into cm-11.0