Updated chip select to use the GPIO control method.

You'd think that using the hardware method would be faster
but it's not.  Using the GPIO method is.

README.md

@@ -40,6 +40,9 @@ If you want to create your own flash package you can use the scripts in the
   directory, and your u-boot.bin file to Linux_for_Tegra/bootloader/t210ref/p3450-porg/
   directory.
 
+* Copy create-signed-partitions.sh and create-flash-package.sh to your
+  Linux_for_Tegra directory.
+
 * From your Linux_for_Tegra directory, run `sudo ./create-signed-partitions.sh -r 200`
   where "200" is the board rev id for the "a02" boards.  Adjust as necessary.
   This command will apply the DTBs to the appropriate partition blobs and sign

spi/l4t-sources-kernel-hardware-nvidia-platform-t210-porg-spidev0-0.patch

@@ -54,23 +54,23 @@ index b226e1a..68f451c 100755
  				nvidia,tristate = <TEGRA_PIN_DISABLE>;
  				nvidia,enable-input = <TEGRA_PIN_ENABLE>;
 diff --git a/kernel-dts/tegra210-porg-p3448-common.dtsi b/kernel-dts/tegra210-porg-p3448-common.dtsi
-index 79e916f..63508b0 100644
+index 79e916f..6bea53c 100644
 --- a/kernel-dts/tegra210-porg-p3448-common.dtsi
 +++ b/kernel-dts/tegra210-porg-p3448-common.dtsi
 @@ -203,6 +203,22 @@
 
  	spi@7000d400 { /* SPI 1 to 40 pin header */
  		status = "okay";
 +		num-cs = <1>;
++		cs-gpios = <&gpio TEGRA_GPIO(C, 3) GPIO_ACTIVE_LOW>;
 +		spi0_0 {
 +			#address-cells = <0x1>;
 +			#size-cells = <0x0>;
 +			compatible = "spidev";
 +			status = "okay";
 +			reg = <0>;
-+			spi-max-frequency = <54000000>;
++			spi-max-frequency = <65000000>;
 +			controller-data {
-+				nvidia,enable-hw-based-cs;
 +				nvidia,cs-setup-clk-count = <0x1e>;
 +				nvidia,cs-hold-clk-count = <0x1e>;
 +				nvidia,rx-clk-tap-delay = <0x1f>;
@@ -80,11 +80,3 @@ index 79e916f..63508b0 100644
  	};
 
  	spi@7000d600 { /* SPI 2 to 40 pin header */
-@@ -800,6 +816,7 @@
- 			suspend-output-low;
- 			gpios = <
- 				TEGRA_GPIO(A, 6) 0
-+				TEGRA_GPIO(C, 3) 0
- 				>;
- 		};
- 	};