powerpc/booke: Restrict SPE exception handlers to e200/e500 cores

SPE exception handlers are now defined for 32-bit e500mc cores even though
SPE unit is not present and CONFIG_SPE is undefined.

Restrict SPE exception handlers to e200/e500 cores adding CONFIG_SPE_POSSIBLE
and consequently guard __stup_ivors and __setup_cpu functions.

Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

diff --cc arch/powerpc/kernel/cpu_setup_fsl_booke.S
Simple merge

diff --cc arch/powerpc/kernel/cputable.c
Simple merge

diff --cc arch/powerpc/kernel/head_fsl_booke.S
Simple merge

diff --cc arch/powerpc/platforms/Kconfig.cputype
Simple merge