According to SoC document, revision info is separated to integer part and
fracton part.
So I separete rmobile_get_cpu_rev() to rmobile_get_cpu_rev_integer() and
rmobile_get_cpu_rev_fraction().
Signed-off-by: NTetsuyuki Kobayashi <koba@kmckk.co.jp>
Signed-off-by: NNobuhiro Iwamatsu <iwamatsu@nigauri.org>