dt-bindings: msm: Update documentation of qcom,llcc

- reg:

	Usage: required

	Value Type: <prop-encoded-array>

	Definition: Start address and the the size of the register region.

	Definition: The first element specifies the llcc base start address and

		    the size of the register region. The second element specifies

		    the llcc broadcast base address and size of the register region.

- reg-names:

        Usage: required

        Value Type: <stringlist>

        Definition: Register region names. Must be "llcc_base", "llcc_broadcast_base".

- interrupts:

	Usage: required

	Definition: The interrupt is associated with the llcc edac device.

			It's used for llcc cache single and double bit error detection

			and reporting.

Example:

	cache-controller@1100000 {

		compatible = "qcom,sdm845-llcc";

		reg = <0x1100000 0x250000>;

		reg = <0x1100000 0x200000>, <0x1300000 0x50000> ;

		reg-names = "llcc_base", "llcc_broadcast_base";

		interrupts = <GIC_SPI 582 IRQ_TYPE_LEVEL_HIGH>;

	};