fix(drivers/rcar3): fix CPG registers redefinition

This commit deletes the value of the redefined CPG register.

Signed-off-by: Toshiyuki Ogasahara <toshiyuki.ogasahara.bo@hitachi.com>
Signed-off-by: Yoshifumi Hosoya <yoshifumi.hosoya.wj@renesas.com>
Change-Id: I05cf4a449ae28adb2ddd59593971a7d0cbcb21de
7 files changed