audio/msm7x30: fix for SEMC devices with stereo hw speaker

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: I2a326b13101bfe589eebe46012559633d8b361df
Merge branch 'cm-10.1' of github.com:CyanogenMod/android_hardware_qcom_audio-caf into cm-10.1

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