Only define WIICAMERA for WiiIRCamera example

Author: Lauszus

.travis.yml

@@ -25,7 +25,7 @@ env:
     - PLATFORMIO_CI_SRC=examples/Bluetooth/SPPMulti
     - PLATFORMIO_CI_SRC=examples/Bluetooth/Wii
     - PLATFORMIO_CI_SRC=examples/Bluetooth/WiiBalanceBoard
-    - PLATFORMIO_CI_SRC=examples/Bluetooth/WiiIRCamera
+    - PLATFORMIO_CI_SRC=examples/Bluetooth/WiiIRCamera PLATFORMIO_BUILD_FLAGS="-DWIICAMERA"
     - PLATFORMIO_CI_SRC=examples/Bluetooth/WiiMulti
     - PLATFORMIO_CI_SRC=examples/Bluetooth/WiiUProController
     - PLATFORMIO_CI_SRC=examples/board_qc
@@ -63,7 +63,7 @@ env:
 
 install:
     - pip install -U platformio
-    - export PLATFORMIO_BUILD_FLAGS="-DDEBUG_USB_HOST -DWIICAMERA -Wall -Werror -Wno-unused-function"
+    - export PLATFORMIO_BUILD_FLAGS="$PLATFORMIO_BUILD_FLAGS -DDEBUG_USB_HOST -Wall -Werror -Wno-unused-function"
 
     #
     # Libraries from PlatformIO Library Registry: