ARM: dts: renesas: Add proper node names to (L)BSC devices

ARM: dts: renesas: Add proper node names to (L)BSC devices

(L)BSC must have a "bus" node name [1] and no unit-address because
there is no reg-property. Fix these entries.

[1] lbsc: $nodename:0: 'lbsc' does not match '^([a-z][a-z0-9\\-]+-bus|bus|localbus|soc|axi|ahb|apb)(@.+)?$'

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/20240926103340.16909-5-wsa+renesas@sang-engineering.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>