spi/spi-atmel: add physical base address

Needed for future use with dmaengine enabled driver.
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
[wenyou.yang@atmel.com: submit the patch]
Signed-off-by: NWenyou Yang <wenyou.yang@atmel.com>
Tested-by: NRichard Genoud <richard.genoud@gmail.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

drivers/spi/spi-atmel.c

@@ -196,6 +196,7 @@ struct atmel_spi_caps {
 struct atmel_spi {
 	spinlock_t		lock;
 
+	phys_addr_t		phybase;
 	void __iomem		*regs;
 	int			irq;
 	struct clk		*clk;
@@ -996,6 +997,7 @@ static int atmel_spi_probe(struct platform_device *pdev)
 	as->regs = ioremap(regs->start, resource_size(regs));
 	if (!as->regs)
 		goto out_free_buffer;
+	as->phybase = regs->start;
 	as->irq = irq;
 	as->clk = clk;