clk: sirf: add CSR atlas7 clk and reset support

* Clock and reset bindings for CSR atlas7

Required properties:

- compatible: Should be "sirf,atlas7-car"

- reg: Address and length of the register set

- #clock-cells: Should be <1>

- #reset-cells: Should be <1>

The clock consumer should specify the desired clock by having the clock

ID in its "clocks" phandle cell.

The ID list atlas7_clks defined in drivers/clk/sirf/clk-atlas7.c

The reset consumer should specify the desired reset by having the reset

ID in its "reset" phandle cell.

The ID list atlas7_reset_unit defined in drivers/clk/sirf/clk-atlas7.c

Examples: Clock and reset controller node:

car: clock-controller@18620000 {

	compatible = "sirf,atlas7-car";

	reg = <0x18620000 0x1000>;

	#clock-cells = <1>;

	#reset-cells = <1>;

};

Examples: Consumers using clock or reset:

timer@10dc0000 {

	compatible = "sirf,macro-tick";

	reg = <0x10dc0000 0x1000>;

	clocks = <&car 54>;

	interrupts = <0 0 0>,

		   <0 1 0>,

		   <0 2 0>,

		   <0 49 0>,

		   <0 50 0>,

		   <0 51 0>;

};

uart1: uart@18020000 {

	cell-index = <1>;

	compatible = "sirf,macro-uart";

	reg = <0x18020000 0x1000>;

	clocks = <&clks 95>;

	interrupts = <0 18 0>;

	fifosize = <32>;

};

vpp@13110000 {

	compatible = "sirf,prima2-vpp";

	reg = <0x13110000 0x10000>;

	interrupts = <0 31 0>;

	clocks = <&car 85>;

	resets = <&car 29>;

};

# Makefile for sirf specific clk

# Makefile for sirf specific clk

#

#

obj-$(CONFIG_ARCH_SIRF) += clk-prima2.o clk-atlas6.o

obj-$(CONFIG_ARCH_SIRF) += clk-prima2.o clk-atlas6.o clk-atlas7.o