asoc: msm-routing: Fix array out of bounds issue.

It seems there is out of bound access chances for lsm_app_type_cfg
array within msm_routing_get_lsm_app_type_cfg_control() callback.
Added case check to return invalid value if user tries to exceed
maximum allocated size of array to avoid it.

Change-Id: Ied86e6c9a957255c55bb126a09741fbde429be32
Signed-off-by: Ajit Pandey <ajitp@codeaurora.org>