dt-bindings: clock: Add PWM and USB clock IDs to Exynos5410

Add IDs for PWM and USB clocks to Exynos5410. Use the same number as for
Exynos5420 just in case in future these drivers were merged.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>