bitbake: command: Add mc parameter to findProviders command

Adds a multiconfig selection parameter to the findProviders command.
This allows a client to find the providers for a specific multiconfig
instead of the base configuration.

(Bitbake rev: 95bb446137734865f3fe04fe97681d90250deb11)

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/command.py

@@ -414,7 +414,11 @@ class CommandsSync:
     getAllAppends.readonly = True
 
     def findProviders(self, command, params):
-        return command.cooker.findProviders()
+        try:
+            mc = params[0]
+        except IndexError:
+            mc = ''
+        return command.cooker.findProviders(mc)
     findProviders.readonly = True
 
     def findBestProvider(self, command, params):