Blackfin arch: rename irq_flags to bfin_irq_flags

rename irq_flags to bfin_irq_flags to avoid namespace
collision with common code

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

diff --git a/arch/blackfin/include/asm/irq.h b/arch/blackfin/include/asm/irq.h
index e43c205..21e25f7 100644
--- a/arch/blackfin/include/asm/irq.h
+++ b/arch/blackfin/include/asm/irq.h
@@ -49,16 +49,16 @@
 /* Forward decl needed due to cdef inter dependencies */
 static inline uint32_t __pure bfin_dspid(void);
 # define blackfin_core_id() (bfin_dspid() & 0xff)
-# define irq_flags cpu_pda[blackfin_core_id()].imask
+# define bfin_irq_flags cpu_pda[blackfin_core_id()].imask
 #else
-extern unsigned long irq_flags;
+extern unsigned long bfin_irq_flags;
 #endif
 
 #define local_irq_enable() \
 	__asm__ __volatile__( \
 		"sti %0;" \
 		: \
-		: "d" (irq_flags) \
+		: "d" (bfin_irq_flags) \
 	)
 
 #define idle_with_irq_disabled() \
@@ -68,7 +68,7 @@
 		"sti %0;" \
 		"idle;" \
 		: \
-		: "d" (irq_flags) \
+		: "d" (bfin_irq_flags) \
 	)
 
 #ifdef CONFIG_DEBUG_HWERR