ARCH_MSM is a hidden config option now so this defconfig needs to
be updated to select ARCH_MSM_DT instead. While we're here,
remove dead symbols (SSBI), drop selected symbols (ZRELADDR,
PHYLIB, USB_PHY) and enable the MSM random driver (HW_RANDOM_MSM).

Cc: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Kevin Hilman <khilman@linaro.org>