at91: defined mach-types for otc570 board in board config file

quotation from Albert ARIBAUD:
"Recently the ARM mach-types.h file has been brought in sync with its
Linux original, leasing to a number of boards not being listed any more,
as the new list only contains boards which have actual Linux support or
were declared less than one year ago.

The symptom is a build failure with a message of the form "error:
'MACH_TYPE_XXXXXX' undeclared (first use in this function)".

U-Boot maintainers of such boards (in Cc: of this mail) should provide a
patch to re-introduce the MACH_TYPE_XXXXXX definition in their boards'
config header file in include/configs/."

Signed-off-by: Daniel Gorsulowski <Daniel.Gorsulowski@esd.eu>

include/configs/otc570.h

@@ -45,6 +45,13 @@
  */
 #define CONFIG_SYS_TEXT_BASE		0x20002000
 
+/*
+ * since a number of boards are not being listed in linux
+ * arch/arm/tools/mach-types any more, the mach-types have to be
+ * defined here
+ */
+#define MACH_TYPE_OTC570		2166
+
 /* ARM asynchronous clock */
 #define CONFIG_SYS_AT91_SLOW_CLOCK	32768	/* 32.768 kHz crystal */
 #define CONFIG_SYS_AT91_MAIN_CLOCK	16000000/* 16.0 MHz crystal */