enable fcdpro/fcdproplus on macOS; remove asound dependency

asound is not needed; now it uses qt audio

plugins/samplesource/CMakeLists.txt

@@ -29,10 +29,10 @@ if(LIBUSB_FOUND AND LIBBLADERF_FOUND)
     add_subdirectory(bladerf2input)
 endif(LIBUSB_FOUND AND LIBBLADERF_FOUND)
 
-if(LIBUSB_FOUND AND NOT APPLE)
+if(LIBUSB_FOUND)
     add_subdirectory(fcdpro)
     add_subdirectory(fcdproplus)
-endif(LIBUSB_FOUND AND NOT APPLE)
+endif(LIBUSB_FOUND)
 
 find_package(LibHACKRF)
 if(LIBUSB_FOUND AND LIBHACKRF_FOUND)

plugins/samplesource/fcdpro/CMakeLists.txt

@@ -46,7 +46,6 @@ add_library(inputfcdpro SHARED
 
 target_link_libraries(inputfcdpro
 	${QT_LIBRARIES}
-	asound
 	fcdhid
 	fcdlib
 	sdrbase

plugins/samplesource/fcdproplus/CMakeLists.txt

@@ -25,7 +25,7 @@ set(fcdproplus_FORMS
 include_directories(
 	.
 	${CMAKE_CURRENT_BINARY_DIR}
-    ${CMAKE_SOURCE_DIR}/swagger/sdrangel/code/qt5/client    
+        ${CMAKE_SOURCE_DIR}/swagger/sdrangel/code/qt5/client    
 	${CMAKE_SOURCE_DIR}/fcdhid
 	${CMAKE_SOURCE_DIR}/fcdlib
 )
@@ -46,7 +46,6 @@ add_library(inputfcdproplus SHARED
 
 target_link_libraries(inputfcdproplus
 	${QT_LIBRARIES}
-	asound
 	fcdhid
 	fcdlib
 	sdrbase