Fix assembly native source name

Signed-off-by: José Simões <[email protected]>

Author: josesimoes

azure-pipelines.yml

@@ -47,7 +47,7 @@ steps:
 # all build, update and publish steps
 - template: azure-pipelines-templates/class-lib-build.yml@templates  
   parameters:
-    sourceFileName: 'nf_devices_can.cpp'
+    sourceFileName: 'nf_devices_can_native.cpp'
     classLibName: 'nanoFramework.Devices.Can'
 
 # step from template @ nf-tools repo