trivial: kernel/power/poweroff.c: whitespace fix

Fix coding style whitespace fixes. Patch compile tested
Before :-
total: 1 errors, 0 warnings, 46 lines checked
After
total: 0 errors, 0 warnings, 46 lines checked

Before :-
  text	   data	    bss	    dec	    hex	filename
    107	     48	      0	    155	     9b	kernel/power/poweroff.o
After
   text	   data	    bss	    dec	    hex	filename
    107	     48	      0	    155	     9b	kernel/power/poweroff.o
Signed-off-by: Manish Katiyar <mkatiyar@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

kernel/power/poweroff.c

@@ -34,7 +34,7 @@ static struct sysrq_key_op	sysrq_poweroff_op = {
 	.handler        = handle_poweroff,
 	.help_msg       = "powerOff",
 	.action_msg     = "Power Off",
- 	.enable_mask	= SYSRQ_ENABLE_BOOT,
+	.enable_mask	= SYSRQ_ENABLE_BOOT,
 };
 
 static int pm_sysrq_init(void)