Enable kernel XZ compression option on BOOK3S_32. Tested on G4
PowerBook.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
[mpe: Use one select under the PPC symbol guarded by if PPC_BOOK3S]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
        select HAVE_IOREMAP_PROT
        select HAVE_IRQ_EXIT_ON_IRQ_STACK
        select HAVE_KERNEL_GZIP
+       select HAVE_KERNEL_XZ                   if PPC_BOOK3S
        select HAVE_KPROBES
        select HAVE_KPROBES_ON_FTRACE
        select HAVE_KRETPROBES
 
        select HAVE_ARCH_TRANSPARENT_HUGEPAGE
        select ARCH_SUPPORTS_NUMA_BALANCING
        select IRQ_WORK
-       select HAVE_KERNEL_XZ
 
 config PPC_BOOK3E_64
        bool "Embedded processors"