powerpc: Merge 32-bit CHRP support.

SMP still needs more work but UP gets as far as starting userspace
at least.  This uses the 64-bit-style code for spinning up the cpus.

Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/kernel/setup_32.c

@@ -56,6 +56,10 @@ extern void power4_idle(void);
 boot_infos_t *boot_infos;
 struct ide_machdep_calls ppc_ide_md;
 
+/* XXX should go elsewhere */
+int __irq_offset_value;
+EXPORT_SYMBOL(__irq_offset_value);
+
 /* Used with the BI_MEMSIZE bootinfo parameter to store the memory
    size value reported by the boot loader. */
 unsigned long boot_mem_size;