softirq/ia64: Switch to generic local_softirq_pending() implementation

Benefit from the generic softirq mask implementation that rely on per-CPU
mutators instead of working with raw operators on top of this_cpu_ptr().
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: James E.J. Bottomley <jejb@parisc-linux.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Rich Felker <dalias@libc.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/1525786706-22846-7-git-send-email-frederic@kernel.orgSigned-off-by: Ingo Molnar <mingo@kernel.org>

arch/ia64/include/asm/hardirq.h

@@ -13,7 +13,7 @@
 
 #define __ARCH_IRQ_STAT	1
 
-#define local_softirq_pending()	(*this_cpu_ptr(&ia64_cpu_info.softirq_pending))
+#define local_softirq_pending_ref	ia64_cpu_info.softirq_pending
 
 #include <linux/threads.h>
 #include <linux/irq.h>