ia64: make num_rsvd_regions static

Commit f62800992e5917f2 ("ia64: switch to NO_BOOTMEM") removed the last
user of num_rsvd_regions outside arch/ia64/kernel/setup.c.

Link: https://lkml.kernel.org/r/a377b[e-mail]
Signed-off-by: Geert Uytterhoeven <[e-mail]>
Cc: Frank Rowand <[e-mail]>
Cc: Jay Lan <[e-mail]>
Cc: Magnus Damm <[e-mail]>
Cc: Mike Rapoport <[e-mail]>
Cc: Rob Herring <[e-mail]>
Cc: Simon Horman <[e-mail]>
Cc: Tony Luck <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

arch/ia64/include/asm/meminit.h

···
 };
 
 extern struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1];
-extern int num_rsvd_regions;
 
 extern void find_memory (void);
 extern void reserve_memory (void);

arch/ia64/kernel/setup.c

···
  * We use a special marker for the end of memory and it uses the extra (+1) slot
  */
 struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1] __initdata;
-int num_rsvd_regions __initdata;
+static int num_rsvd_regions __initdata;
 
 
 /*