powerpc/83xx: Blacklist mpc83xx_deep_resume() for kprobe

kprobe does not handle events happening in real mode, all
functions running with MMU disabled have to be blacklisted.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/3ac4ab8dd7008b9706d9228a60645a1756fa84bf.1585670437.git.christophe.leroy@c-s.fr

arch/powerpc/platforms/83xx/suspend-asm.S

@@ -548,3 +548,4 @@ mpc83xx_deep_resume:
 	mtdec	r0
 
 	rfi
+_ASM_NOKPROBE_SYMBOL(mpc83xx_deep_resume)