Blackfin: only build irqpanic.c when needed

The irq_panic function is only used when CONFIG_DEBUG_ICACHE_CHECK is
enabled, so move the conditional build to the Makefile rather than
wrapping all of the contents of the file.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

arch/blackfin/mach-common/Makefile

@@ -4,11 +4,12 @@
 
 obj-y := \
 	cache.o cache-c.o entry.o head.o \
-	interrupt.o irqpanic.o arch_checks.o ints-priority.o
+	interrupt.o arch_checks.o ints-priority.o
 
 obj-$(CONFIG_BFIN_ICACHE_LOCK) += lock.o
 obj-$(CONFIG_PM)          += pm.o dpmc_modes.o
 obj-$(CONFIG_CPU_FREQ)    += cpufreq.o
 obj-$(CONFIG_CPU_VOLTAGE) += dpmc.o
 obj-$(CONFIG_SMP)         += smp.o
 obj-$(CONFIG_BFIN_KERNEL_CLOCK) += clocks-init.o
+obj-$(CONFIG_DEBUG_ICACHE_CHECK) += irqpanic.o

arch/blackfin/mach-common/irqpanic.c

@@ -30,21 +30,17 @@
 #include <linux/module.h>
 #include <linux/kernel_stat.h>
 #include <linux/sched.h>
-#include <asm/traps.h>
 #include <asm/blackfin.h>
 
-#ifdef CONFIG_DEBUG_ICACHE_CHECK
 #define L1_ICACHE_START 0xffa10000
 #define L1_ICACHE_END   0xffa13fff
-void irq_panic(int reason, struct pt_regs *regs) __attribute__ ((l1_text));
-#endif
 
 /*
  * irq_panic - calls panic with string setup
  */
+__attribute__ ((l1_text))
 asmlinkage void irq_panic(int reason, struct pt_regs *regs)
 {
-#ifdef CONFIG_DEBUG_ICACHE_CHECK
 	unsigned int cmd, tag, ca, cache_hi, cache_lo, *pa;
 	unsigned short i, j, die;
 	unsigned int bad[10][6];
@@ -126,9 +122,6 @@ asmlinkage void irq_panic(int reason, struct pt_regs *regs)
 			     bad[j][3], bad[j][4], bad[j][5]);
 		}
 		panic("icache coherency error");
-	} else {
+	} else
 		printk(KERN_EMERG "icache checked, and OK\n");
-	}
-#endif
-
 }