powerpc/cell: tidy up pervasive declarations

These are declared in ras.h and defined in ras.c so remove them from
pervasive.h
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210130130852.2952424-23-npiggin@gmail.com

arch/powerpc/platforms/cell/pervasive.c

@@ -25,6 +25,7 @@
 #include <asm/cpu_has_feature.h>
 
 #include "pervasive.h"
+#include "ras.h"
 
 static void cbe_power_save(void)
 {

arch/powerpc/platforms/cell/pervasive.h

@@ -13,9 +13,6 @@
 #define PERVASIVE_H
 
 extern void cbe_pervasive_init(void);
-extern void cbe_system_error_exception(struct pt_regs *regs);
-extern void cbe_maintenance_exception(struct pt_regs *regs);
-extern void cbe_thermal_exception(struct pt_regs *regs);
 
 #ifdef CONFIG_PPC_IBM_CELL_RESETBUTTON
 extern int cbe_sysreset_hack(void);