msm7x30-common: add support for ion

Change-Id: I81714fc4f6447a4c92fd676fc438ca5265efb07e
msm7x30: update configs

 * do not enable ion though

Change-Id: I701ca92f35aab283d636a52c0c45949fa3cfd8fb
Merge branch 'kitkat' of https://github.com/Evervolv/android_kernel_htc_msm7x30-3.0.git into HEAD