Platform: OLPC: Make olpc_dt_compatible_match() static __init
Addresses a kbuild warning:
>> WARNING: vmlinux.o(.text+0x3b764): Section mismatch in reference from
the function olpc_dt_compatible_match() to the function
.init.text:olpc_dt_getproperty()
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Reported-by: kbuild test robot <lkp@intel.com> Fixes: a7a9bacb9a32 (x86/platform/olpc: Use a correct version when making up a battery node) Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>