bcma: add support for population subnodes also when build as module

of_default_bus_match_table was not exported earlier, so it could only
be accessed by code compiled into the kernel. A new function
of_platform_default_populate() was added which uses
of_default_bus_match_table and this function is also exported. This way
it is possible to create a bus with the content of
of_default_bus_match_table and we can remove the hacks from bcma.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/bcma/main.c

@@ -436,13 +436,8 @@ int bcma_bus_register(struct bcma_bus *bus)
 	}
 
 	dev = bcma_bus_get_host_dev(bus);
-	/* TODO: remove check for IS_BUILTIN(CONFIG_BCMA) check when
-	 * of_default_bus_match_table is exported or in some other way
-	 * accessible. This is just a temporary workaround.
-	 */
-	if (IS_BUILTIN(CONFIG_BCMA) && dev) {
-		of_platform_populate(dev->of_node, of_default_bus_match_table,
-				     NULL, dev);
+	if (dev) {
+		of_platform_default_populate(dev->of_node, NULL, dev);
 	}
 
 	/* Cores providing flash access go before SPROM init */