init: Fix heap corruption for services with arguments

    The 'args' array *must* be the last entry in the structure.

This fixes a longstanding issue (apparently since tc3) where
a service with an argument would corrupt the heap. The more
arguments, the more corruption :|. This will probably also end up
making key-code bound services more reliable (ie: bugreports triggered
via the keyboard)

Signed-off-by: San Mehat <san@google.com>