ARM: mvebu: remove prototypes of non-existing functions from common.h

The mach-mvebu/common.h file contains prototypes of functions that
have been removed, so this commit removes the corresponding
prototypes.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

arch/arm/mach-mvebu/common.h

@@ -19,11 +19,7 @@
 
 void mvebu_restart(enum reboot_mode mode, const char *cmd);
 
-void armada_370_xp_init_irq(void);
-void armada_370_xp_handle_irq(struct pt_regs *regs);
-
 void armada_xp_cpu_die(unsigned int cpu);
-int armada_370_xp_coherency_init(void);
 void armada_xp_secondary_startup(void);
 extern struct smp_operations armada_xp_smp_ops;
 #endif