* Qualcomm Technologies Inc. NSS CRYPTO Driver.

This driver is responsible for setting up the ipq50xx crypto engine.
The driver is responsible for initialization of crypto engine, downloading
of crypto engine firmware, allocating a dma, setting up context record.

Required properties:
- compatible: "qcom,nss-crypto"
- qcom,max-contexts: Maximum number of supported context
- qcom,max-context-size: Maximum context size in words supported by HW.
- ranges: used when there is a reg_map in child node.

* ce5_node: This is the first child node that denotes that this driver supports ce5 crypto engine.

Required properties:
- compatible: "qcom,ce5".
- reg-names: Indicates various resources passed to driver by name.
- reg: physical address and length of the register set for the device.
- qcom,dma-mask: Max dma rings supported, each bit represent a ring number
- qcom,transform-enabled: Whether Packet for tranformation will be sent from host or not.
- qcom,aes128-cbc: Enable crypto algorithm
- qcom,aes256-cbc: Enable crypto algorithm
- qcom,aes128-ctr: Enable crypto algorithm
- qcom,aes256-ctr: Enable crypto algorithm
- qcom,aes128-ecb: Enable crypto algorithm
- qcom,aes256-ecb: Enable crypto algorithm
- qcom,3des-cbc: Enable crypto algorithm
- qcom,sha160-hash: Enable crypto algorithm
- qcom,sha256-hash: Enable crypto algorithm
- qcom,sha160-hmac: Enable crypto algorithm
- qcom,sha256-hmac: Enable crypto algorithm
- qcom,aes128-cbc-sha160-hmac: Enable crypto algorithm
- qcom,aes256-cbc-sha160-hmac: Enable crypto algorithm
- qcom,aes128-ctr-sha160-hmac: Enable crypto algorithm
- qcom,aes256-ctr-sha160-hmac: Enable crypto algorithm
- qcom,3des-cbc-sha160-hmac: Enable crypto algorithm
- qcom,3des-cbc-sha256-hmac: Enable crypto algorithm
- qcom,aes128-cbc-sha256-hmac: Enable crypto algorithm
- qcom,aes256-cbc-sha256-hmac: Enable crypto algorithm
- qcom,aes128-ctr-sha256-hmac: Enable crypto algorithm
- qcom,aes256-ctr-sha256-hmac: Enable crypto algorithm

* engine0: First engine for CE5 block. Some crypto HW can support multiple engine.

Required properties:
- qcom,ee: Execution engines to be used.

example:
	qcom,nss_crypto {
		compatible = "qcom,nss-crypto";
		#address-cells = <1>;
		#size-cells = <1>;
		qcom,max-contexts = <64>;
		qcom,max-context-size = <144>;
		ranges;
		ce5_node {
			compatible = "qcom,ce5";
			reg-names = "crypto_pbase", "bam_base";
			reg = <0x0073a000 0x6000>,
			    <0x00704000 0x20000>;
			qcom,dma-mask = <0x0c>;
			qcom,transform-enabled;
			qcom,aes128-cbc;
			qcom,aes256-cbc;
			qcom,aes128-ctr;
			qcom,aes256-ctr;
			qcom,aes128-ecb;
			qcom,aes256-ecb;
			qcom,3des-cbc;
			qcom,sha160-hash;
			qcom,sha256-hash;
			qcom,sha160-hmac;
			qcom,sha256-hmac;
			qcom,aes128-cbc-sha160-hmac;
			qcom,aes256-cbc-sha160-hmac;
			qcom,aes128-ctr-sha160-hmac;
			qcom,aes256-ctr-sha160-hmac;
			qcom,3des-cbc-sha160-hmac;
			qcom,3des-cbc-sha256-hmac;
			qcom,aes128-cbc-sha256-hmac;
			qcom,aes256-cbc-sha256-hmac;
			qcom,aes128-ctr-sha256-hmac;
			qcom,aes256-ctr-sha256-hmac;
			engine0 {
				qcom,ee = <2 3>;
			};
		};
	};