ARM: dts: omap5-uevm: Split SMPS10 in two nodes

SMPS10 has two outputs OUT1 and OUT2. Hence SMPS10 is modeled as
two regulators. The DT node is split to reflect it.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>