cel_odbc.c: Fix menuslect module description display.

Asterisk's makefile for menuselect has a very simple source file parsing
script that looks for AST_MODULE_INFO lines to extract the quoted string
as a module description.  If it does not find a quoted string it uses the
whole line as the description.

Change-Id: I80f13a63818e4e28d683639a94a4dfaea405c1d5