From 713efcabca1fffbbb253a33ff0f8fda532633064 Mon Sep 17 00:00:00 2001
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Fri, 30 Aug 2013 09:02:27 -0400
Subject: [PATCH] drivers/xen-tpmfront: Fix compile issue with missing option.

Randy reports:

x86_64:

drivers/built-in.o: In function `xen_tpmfront_init':
xen-tpmfront.c:(.init.text+0x257c): undefined reference to `xenbus_register_frontend'

This is nicely fixed by selecting the XenBus frontend module.

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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