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/Makefile.inc b/Makefile.inc
index 7263315..b24429c 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -131,9 +131,9 @@
 # try to fetch non-optional submodules if the source is under git
 forgetthis:=$(if $(GIT),$(shell git submodule update --init))
 ifeq ($(CONFIG_USE_BLOBS),y)
-# this is necessary because blobs is update=none, and so is ignored
+# this is necessary because 3rdparty/blobs is update=none, and so is ignored
 # unless explicitly requested and enabled through --checkout
-forgetthis:=$(if $(GIT),$(shell git submodule update --init --checkout blobs))
+forgetthis:=$(if $(GIT),$(shell git submodule update --init --checkout 3rdparty/blobs))