build: Enable QCOM_BSP, QC_AV with QCOM_HARDWARE

Change-Id: Ibf9dd35272521109fea52e46bacf6e1e3074ed6a
Enable QCOM_BSP_LEGACY flag for pre-8974 targets

Change-Id: I895f1b1cbad0d260e1bca87ccb61e6194de023fd
Use block and flag it.

Change-Id: Ic2ac31b89ea0fb691de2262a2c266d561b6de7c8
add support for extended prop post processing

Change-Id: If754dd2349eb376a536d3858b4263883d3b1a920