ARM: shmobile: defconfig: Enable reset controller support
R-Car Gen2 and RZ/G1 SoCs can make use of the optional reset controller
support in the Renesas CPG/MSSR driver.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>