powerpc/ps3: Add gelic udbg driver

Add a new udbg driver for the PS3 gelic Ehthernet device.

This driver shares only a few stucture and constant definitions with the
gelic Ethernet device driver, so is implemented as a stand-alone driver
with no dependencies on the gelic Ethernet device driver.

Signed-off-by: Hector Martin <hector@marcansoft.com>
Signed-off-by: Andre Heider <a.heider@gmail.com>
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index 067cb84..ab2335f 100644
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -258,6 +258,14 @@
 	depends on PPC_WSP
 	select PPC_UDBG_16550
 
+config PPC_EARLY_DEBUG_PS3GELIC
+	bool "Early debugging through the PS3 Ethernet port"
+	depends on PPC_PS3
+	select PS3GELIC_UDBG
+	help
+	  Select this to enable early debugging for the PlayStation3 via
+	  UDP broadcasts sent out through the Ethernet port.
+
 endchoice
 
 config PPC_EARLY_DEBUG_HVSI_VTERMNO