dt-bindings: drop tab characters from DTS examples

dt-bindings: drop tab characters from DTS examples

YAML literal block scalars cannot use tabs for indent.
Replace tab separators (mostly between values and trailing /* ... */
comments) with single spaces.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://patch.msgid.link/2044ee0cac191c7be8b6e989fc3c99b24aa4cc5e.1777434096.git.daniel@makrotopia.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>