posix_rpi_cross_no_shield.cmake: move -D__DF_RPI_SINGLE from commons to this file

cmake/configs/posix_rpi_cross_no_shield.cmake

@@ -2,13 +2,18 @@
 # use this file to cross compile px4  for raspberry pi without any shield
 include(configs/posix_rpi_common)
 
+add_definitions(
+	-D__DF_RPI_SINGLE # For raspberry pi without shield accessory
+)
+
 if("$ENV{RPI_USE_CLANG}" STREQUAL "1")
-        set(CMAKE_TOOLCHAIN_FILE ${PX4_SOURCE_DIR}/cmake/toolchains/Toolchain-arm-linux-gnueabihf-raspbian-clang.cmake)
+	set(CMAKE_TOOLCHAIN_FILE ${PX4_SOURCE_DIR}/cmake/toolchains/Toolchain-arm-linux-gnueabihf-raspbian-clang.cmake)
 else()
-        set(CMAKE_TOOLCHAIN_FILE ${PX4_SOURCE_DIR}/cmake/toolchains/Toolchain-arm-linux-gnueabihf-raspbian.cmake)
+	set(CMAKE_TOOLCHAIN_FILE ${PX4_SOURCE_DIR}/cmake/toolchains/Toolchain-arm-linux-gnueabihf-raspbian.cmake)
 endif()
 
+
 set(CMAKE_PROGRAM_PATH
-        "${RPI_TOOLCHAIN_DIR}/gcc-linaro-arm-linux-gnueabihf-raspbian/bin"
-        ${CMAKE_PROGRAM_PATH}
+	"${RPI_TOOLCHAIN_DIR}/gcc-linaro-arm-linux-gnueabihf-raspbian/bin"
+	${CMAKE_PROGRAM_PATH}
 )