cmake: Enable video by default

CMakeLists.txt

@@ -136,11 +136,11 @@ IF (${RING_FOUND} MATCHES "true")
    INCLUDE_DIRECTORIES(${ring_INCLUDE_DIRS})
 ENDIF()
 
-IF(${ENABLE_VIDEO} MATCHES true)
+IF(NOT (${ENABLE_VIDEO} MATCHES false))
    MESSAGE("VIDEO enabled")
    SET(ENABLE_VIDEO 1 CACHE BOOLEAN "Enable video")
    add_definitions( -DENABLE_VIDEO=true )
-ENDIF(${ENABLE_VIDEO} MATCHES true)
+ENDIF(NOT (${ENABLE_VIDEO} MATCHES false))
 
 FIND_PACKAGE(Qt5Core REQUIRED)
 FIND_PACKAGE(Qt5DBus)