Add u-boot for Palmetto
Ported from http://github.com/facebook/openbmc.
diff --git a/meta-palmetto/recipes-bsp/u-boot/files/config.patch b/meta-palmetto/recipes-bsp/u-boot/files/config.patch
new file mode 100644
index 0000000..c5216e7
--- /dev/null
+++ b/meta-palmetto/recipes-bsp/u-boot/files/config.patch
@@ -0,0 +1,14 @@
+--- a/include/configs/palmetto.h
++++ b/include/configs/palmetto.h
+@@ -96,11 +96,8 @@
+ #define CONFIG_UPDATE "tftp 40800000 ast2400.scr; so 40800000'"
+
+ #define CONFIG_BOOTDELAY 3 /* autoboot after 3 seconds */
+-#define CONFIG_AUTOBOOT_KEYED
+ #define CONFIG_AUTOBOOT_PROMPT \
+ "autoboot in %d seconds (stop with 'Delete' key)...\n", bootdelay
+-#define CONFIG_AUTOBOOT_STOP_STR "\x1b\x5b\x33\x7e" /* 'Delete', ESC[3~ */
+-#define CONFIG_ZERO_BOOTDELAY_CHECK
+
+ #ifdef CONFIG_FLASH_AST2300
+ #define CONFIG_BOOTCOMMAND "bootm 20080000 20300000"