[XFS] fix compilation without CONFIG_PROC_FS
[XFS] fix compilation without CONFIG_PROC_FS

SGI-PV: 984019

SGI-Modid: xfs-linux-melb:xfs-kern:31408a

Signed-off-by: Christoph Hellwig <923f7720577207a44b32e59bbfbea59d27f1ae8e@infradead.org>
Signed-off-by: Tim Shimmin <d1c056a983786a38ca76a05cda240c7b86d77136@sgi.com>
Signed-off-by: Lachlan McIlroy <f5e96ceb240f4c6b121fe0445b266d7666b5fe0e@sgi.com>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs