cmake: Fixes for qurt and nuttx

Added px4_parameters.c to nuttx executable src list.
Minor syntax fix in Tools/px_generate_params.py for semicolon.
Added handling of PX4_MAIN which was not yet supoprted in the
cmake build.
Fixed include quotes in muorb_test_example.cpp

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

src/firmware/qurt/CMakeLists.txt

@@ -20,10 +20,12 @@ px4_generate_parameters()
 if ("${QURT_ENABLE_STUBS}" STREQUAL "1")
 	add_executable(mainapp 
 		${CMAKE_SOURCE_DIR}/src/platforms/qurt/dspal/dspal_stub.c
+		${CMAKE_BINARY_DIR}/px4_parameters.c
 		${CMAKE_BINARY_DIR}/apps.h)
 else("${QURT_ENABLE_STUBS}" STREQUAL "1")
 	add_library(mainapp 
 		${CMAKE_SOURCE_DIR}/src/platforms/qurt/dspal/dspal_stub.c
+		${CMAKE_BINARY_DIR}/px4_parameters.c
 		${CMAKE_BINARY_DIR}/apps.h)
 endif()