linux-yocto: Reorganize and update LSI PUBLIC repos

- Reorganize linux-yocto inc files for GitHub public repos by setting
  LSI_KERNEL_TAG and LINUX_VERSION variable in specific lsi-public*.inc
- Update LSI_KERNEL_TAG, LINUX_VERSION and SRCREV to build the latest
  released kernels from the public 3.10 repository - tag 8.8.1.33.

Signed-off-by: Daniel Dragomir <daniel.dragomir@windriver.com>