3rdparty: move to 3rdparty/blobs

There's now room for other repositories under 3rdparty.

Change-Id: I51b02d8bf46b5b9f3f8a59341090346dca7fa355
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/10109
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/src/southbridge/amd/cimx/sb800/Kconfig b/src/southbridge/amd/cimx/sb800/Kconfig
index 5a0980a..28f2d19 100644
--- a/src/southbridge/amd/cimx/sb800/Kconfig
+++ b/src/southbridge/amd/cimx/sb800/Kconfig
@@ -134,7 +134,7 @@
 
 config SB800_IMC_FWM_FILE
 	string "IMC firmware path and filename"
-	default "blobs/southbridge/amd/sb800/imc.bin"
+	default "3rdparty/blobs/southbridge/amd/sb800/imc.bin"
 
 choice
 	prompt "SB800 Firmware ROM Position"