usb: typec: ucsi: add support for Cypress CCGx

Hi Greg,

Quoted 21 lines

Quoted 8 lines

(quoted diff) +8 -0

+static int ccg_read(struct ucsi_ccg *uc, u16 rab, u8 *data, u32 len)
+{
+	struct device *dev = uc->dev;
+	struct i2c_client *client = uc->client;
+	unsigned char buf[2];
+	struct i2c_msg msgs[] = {
+		{
+			.addr	= client->addr,

Review

Quoted 10 lines

(quoted diff) +10 -0

+			.flags  = 0x0,
+			.len	= 0x2,
+			.buf	= buf,
+		},
+		{
+			.addr	= client->addr,
+			.flags  = I2C_M_RD,
+			.buf	= data,
+		},
+	};

Are you sure you are allowed to do i2c messages off of the stack like this? Will that work on all platforms?