[POWERPC] celleb: fix CONFIG_KEXEC dependency
[POWERPC] celleb: fix CONFIG_KEXEC dependency

celleb_kexec_cpu_down() depends on CONFIG_KEXEC.

Signed-off-by: Kou Ishizaki <f1a25bdb1370aa40342b792ebb69494c31c506a0@toshiba.co.jp>
Acked-by: Benjamin Herrenschmidt <a7089bb6e7e92505d88aaff006cbdd60cc9120b6@kernel.crashing.org>
Signed-off-by: Paul Mackerras <19a0ba370c443ba08d20b5061586430ab449ee8c@samba.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs