Add GPIO expander for mangOH Red into sdef

mangOH_Red.sdef

@@ -25,9 +25,7 @@ apps:
     $LEGATO_ROOT/apps/platformServices/spiService
     $LEGATO_ROOT/apps/platformServices/devMode
 
-    // TODO: The mangOH Red has a single GPIO expander and a 4-port I2C switch, so
-    // gpioExpanderService will need to be adapted to support both platforms.
-    // $MANGOH_ROOT/apps/GpioExpander/gpioExpanderService/gpioExpanderService.adef
+    $MANGOH_ROOT/apps/GpioExpanderRed/gpioExpanderService/gpioExpanderService.adef
 
     // TODO: MuxControl was written specifically for mangOH Green.  Perhaps mangOH Red needs a
     // similar facility to manage uart routing.
@@ -39,8 +37,6 @@ apps:
     $MANGOH_ROOT/apps/DataRouter/drTool/drTool.adef
     $MANGOH_ROOT/apps/SocialService/socialService.adef
 
-    $MANGOH_ROOT/apps/RedWifiBt/spiSlaveTest.adef
-
     // Command-line tools.
     $LEGATO_ROOT/apps/tools/tools
 }