Kconfig whitespace fixes

trivial whitespace fixes.  Mostly changing leading spaces to tabs.

Change-Id: I0bdfe2059b90725e64adfc0bdde785b4e406969d
Signed-off-by: Martin Roth <gaumless@gmail.com>
Reviewed-on: http://review.coreboot.org/10000
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/drivers/intel/i210/Kconfig

@@ -1,3 +1,3 @@
 config DRIVER_INTEL_I210
-       bool
-       default n
+	bool
+	default n