Add kernel config tests

Add kernel config tests

A simple start to simple day. Check for evidence of following CONFIGs:

CONFIG_MMC_BLOCK_MAX_SPEED=y
CONFIG_IPV6=y
CONFIG_IP_MULTICAST=y
CONFIG_PSTORE=y
CONFIG_PSTORE_CONSOLE=y
CONFIG_PSTORE_PMSG=y
CONFIG_SYSVIPC is not set

ToDo: Evidence for all configs in android/configs/android-base.cfg
      and android/configs/android-recommended.cfg. Most are not
      possible to directly discover, this is performed on a best
      effort basis.

Bug: 19173869
Bug: 26559308
Change-Id: I0447334fab7781579fab10610d2f7ac1d34e6044