DriverFramework purge

The bulk of this change was tightly coupled and needed to be deleted in one pass. Some of the smaller changes were things that broke as a result of the initial purge and subsequently fixed by further eradicating unnecessary platform differences. Finally, I deleted any dead code I came across in the related files I touched while going through everything.

 - DriverFramework (src/lib/DriverFramework submodule) completely removed
 - added dspal submodule in qurt platform (was brought in via DriverFramework)
 - all df wrapper drivers removed
 - all boards using df wrapper drivers updated to use in tree equivalents
 - unused empty arch/board.h on posix and qurt removed
 - unused IOCTLs removed (pub block, priv, etc)
 - Integrator delete methods only used from df wrapper drivers
 - commander: sensor calibration use "NuttX version" everywhere for now
 - sensors: update to px4_{open, read, close} instead of DevMgr wrapper (adc open for analog differential pressure)
 - battery_status: update to px4_{open, read, close} instead of DevMgr wrapper (adc open for analog differential pressure)
 - cdev cleanup conflicting typedefs and names with actual OS (pollevent_t, etc)
 - load_mon and top remove from linux boards (unused)
 - delete unused PX4_MAIN_FUNCTION
 - delete unused getreg32 macro
 - delete unused SIOCDEVPRIVATE define
 - named each platform tasks consistently
 - posix list_devices and list_topics removed (list_files now shows all virtual files)

platforms/qurt/cmake/px4_impl_os.cmake

@@ -108,24 +108,20 @@ endfunction()
 #
 function(px4_os_add_flags)
 
-	set(DSPAL_ROOT src/lib/DriverFramework/dspal)
+	set(DSPAL_ROOT platforms/qurt/dspal)
 	include_directories(
 		${DSPAL_ROOT}/include
-		${DSPAL_ROOT}/mpu_spi/inc
 		${DSPAL_ROOT}/sys
 		${DSPAL_ROOT}/sys/sys
-		${DSPAL_ROOT}/uart_esc/inc
 
 		platforms/posix/include
 		platforms/qurt/include
-		)
+	)
 
 	add_definitions(
 		-D__PX4_POSIX
 		-D__PX4_QURT
-
-		-D__DF_QURT # For DriverFramework
-		)
+	)
 
 	add_compile_options(
 		-fPIC
@@ -139,8 +135,6 @@ function(px4_os_add_flags)
 	set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS)
 	set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS)
 
-	set(DF_TARGET "qurt" CACHE STRING "DriverFramework target" FORCE)
-
 endfunction()
 
 #=============================================================================