ARM: shmobile: lager: Enable SATA1 in r8a7790-lager.dts

This enables SATA1 in Lager device tree.
SATA0 is not available on Lager since its
pinmux is fixed to USB3.0.

Signed-off-by: Valentine Barshak <valentine.barshak@cogentembedded.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>