spi: fix tegra SPI binding examples

Fix name of slink binding and address of sflash example to make it
self consistent.
Signed-off-by: NAllen Martin <amartin@nvidia.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Documentation/devicetree/bindings/spi/nvidia,tegra20-sflash.txt

@@ -13,7 +13,7 @@ Recommended properties:
 
 Example:
 
-spi@7000d600 {
+spi@7000c380 {
 	compatible = "nvidia,tegra20-sflash";
 	reg = <0x7000c380 0x80>;
 	interrupts = <0 39 0x04>;

Documentation/devicetree/bindings/spi/nvidia,tegra20-slink.txt

@@ -13,7 +13,7 @@ Recommended properties:
 
 Example:
 
-slink@7000d600 {
+spi@7000d600 {
 	compatible = "nvidia,tegra20-slink";
 	reg = <0x7000d600 0x200>;
 	interrupts = <0 82 0x04>;