msm: smd: Move legacy targets configuration out of else

To allow complete removal of the macro interrupt definitions,
move the remaining legacy targets out of the #else clause
and replace the else clause with empty interrupt
definitions.  As targets convert to platform data,
their #if  defined(TARGET) definitions will get removed.

This prevents inadvertent fallback to legacy interrupt
configuration if a target is using platform data or device
tree, but didn't correctly configure all targets.

Change-Id: Icdaf2ff84e1645eeed9498502c6889a5a12ab5ab
Signed-off-by: Eric Holmberg <eholmber@codeaurora.org>