i9500: disable hardware VP8 decoder

* Google provides an updated software implementation
i9500: enable EGL workarounds
i9500: avoid overlapping media path
i9500: Revert QCRIL related changes

* Squash of the following:

Revert "i9500: update ril header to match xmm6262 libril update from qcril"

This reverts commit 53d3b49119b28fbe884c79fc1549d5e9e2348d87.

Revert "i9500: update RIL defines to allow device to sleep"

This reverts commit 2702727812d71c91a69b1bf1c14b6450966d487b.