MIPS: Move 'gic_present' to common location.

Move the global variable 'gic_present' to be defined in the file
'arch/mips/kernel/irq-gic.c' instead of defining it individually
for each platform making use of the GIC. Also change the type to
be an unsigned integer instead of signed.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>

arch/mips/kernel/irq-gic.c

@@ -19,6 +19,7 @@
 #include <linux/hardirq.h>
 #include <asm-generic/bitops/find.h>
 
+unsigned int gic_present;
 unsigned long _gic_base;
 unsigned int gic_irq_base;
 unsigned int gic_irq_flags[GIC_NUM_INTRS];

arch/mips/kernel/smp-mt.c

@@ -34,6 +34,7 @@
 #include <asm/mipsregs.h>
 #include <asm/mipsmtregs.h>
 #include <asm/mips_mt.h>
+#include <asm/gic.h>
 
 static void __init smvp_copy_vpe_config(void)
 {
@@ -151,8 +152,6 @@ static void vsmp_send_ipi_mask(const struct cpumask *mask, unsigned int action)
 static void __cpuinit vsmp_init_secondary(void)
 {
 #ifdef CONFIG_IRQ_GIC
-	extern int gic_present;
-
 	/* This is Malta specific: IPI,performance and timer interrupts */
 	if (gic_present)
 		change_c0_status(ST0_IM, STATUSF_IP3 | STATUSF_IP4 |