percpu change in vmlinux.lds.h breaks a few arches

percpu change in vmlinux.lds.h breaks a few arches

[Mike Frysinger]

commit d3794979a8a80c222ce9d016a6dfc4bed36965d0 (Zero based percpu:
infrastructure to rebase the per cpu area to zero) breaks things
because it does not use VMLINUX_SYMBOL() on symbols in
asm-generic/vmlinux.lds.h

for example:
mm/built-in.o: In function `cpu_alloc_init':
(.init.text+0x1496): undefined reference to `__per_cpu_start'
mm/built-in.o: In function `cpu_alloc_init':
(.init.text+0x149c): undefined reference to `__per_cpu_start'
mm/built-in.o: In function `cpu_alloc_init':
(.init.text+0x14a2): undefined reference to `__per_cpu_end'
mm/built-in.o: In function `cpu_alloc_init':
(.init.text+0x14a6): undefined reference to `__per_cpu_end'
make: *** [.tmp_vmlinux1] Error 1
-mike