ARM: dts: emev2: Fix W=1 dtc warnings

Warning (unit_address_vs_reg): Node /clocks@e0110000/iic0_sclkdiv has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/iic0_sclk has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/iic1_sclkdiv has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/iic1_sclk has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/usia_u0_sclkdiv has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/usib_u1_sclkdiv has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/usib_u2_sclkdiv has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/usib_u3_sclkdiv has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/usia_u0_sclk has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/usib_u1_sclk has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/usib_u2_sclk has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/usib_u3_sclk has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /clocks@e0110000/sti_sclk has a reg or ranges property, but no unit name

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>