msm: pm: Support SPM PLL management

- reg: physical IMEM address reserved for PC counters and the size

- qcom,use-sync-timer: Indicates whether the target uses the synchronized QTimer.

- qcom,saw-turns-off-pll: Version of SAW2.1 or can turn off the HFPLL, when

	doing power collapse and so the core need to switch to Global PLL before

	PC.

- qcom,synced-clocks: Indicates that all cpus running off a single clock source and to

	instantiate the necessary clock source.

- qcom,pc-resets-timer: Indicates that the timer gets reset during power collapse.

- qcom,tz-flushes-cache: Indicates that TZ flushes all of the cache during

power collapse. MSM PM can decide to not perform cache flush operations to

reduce latency associated with L2 PC.

- qcom,saw-turns-off-pll: Indicates that the CPU's PLL can be managed from SAW

	hardware. On such targets software mangement of PLL is not required. If

	this property is specified then qcom,synced-clocks would be ignored.

Example:

Example 1:

qcom,pm@fe800664 {

		compatible = "qcom,pm";

		reg = <0xfe800664 0x40>;

		qcom,use-sync-timer;

	};

Example 2:

qcom,pm@fe800664 {

		compatible = "qcom,pm";

		reg = <0xfe800664 0x40>;

		qcom,saw-turns-off-pll;

	};

	char clk_name[] = "cpu??_clk";

	char *key;

	key = "qcom,saw-turns-off-pll";

	if (of_property_read_bool(pdev->dev.of_node, key))

		return 0;

	key = "qcom,synced-clocks";

	synced_clocks = of_property_read_bool(pdev->dev.of_node, key);