staging/lustre/libcfs: Fix build errors for !CONFIG_SMP

When CONFIG_SMP=n:

drivers/staging/lustre/include/linux/libcfs/linux/linux-mem.h:58:31: fatal error: libcfs/libcfs_cpu.h: No such file or directory

drivers/staging/lustre/lustre/libcfs/libcfs_cpu.c:78:1: error: redefinition of 'cfs_cpt_table_print'
drivers/staging/lustre/include/linux/libcfs/libcfs_cpu.h:109:1: note: previous definition of 'cfs_cpt_table_print' was here
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/include/linux/libcfs/linux/linux-mem.h

@@ -55,7 +55,7 @@
 
 #ifndef HAVE_LIBCFS_CPT
 /* Need this for cfs_cpt_table */
-#include <libcfs/libcfs_cpu.h>
+#include <linux/libcfs/libcfs_cpu.h>
 #endif
 
 #define CFS_PAGE_MASK		   (~((__u64)PAGE_CACHE_SIZE-1))

drivers/staging/lustre/lustre/libcfs/libcfs_cpu.c

@@ -74,6 +74,7 @@ cfs_cpt_table_free(struct cfs_cpt_table *cptab)
 }
 EXPORT_SYMBOL(cfs_cpt_table_free);
 
+#ifdef CONFIG_SMP
 int
 cfs_cpt_table_print(struct cfs_cpt_table *cptab, char *buf, int len)
 {
@@ -87,6 +88,7 @@ cfs_cpt_table_print(struct cfs_cpt_table *cptab, char *buf, int len)
 	return rc;
 }
 EXPORT_SYMBOL(cfs_cpt_table_print);
+#endif /* CONFIG_SMP */
 
 int
 cfs_cpt_number(struct cfs_cpt_table *cptab)