Added new subarch, platform, cpu, driver variants for configuration testing.

New files are an exact copy of pb926 files, but will help in testing different
configurations and compilations.

src/platform/eb/uart.c

@@ -0,0 +1,28 @@
+/*
+ * Ties up platform's uart driver functions with generic API
+ *
+ * Copyright (C) 2007 Bahadir Balban
+ */
+#include <l4/generic/platform.h>
+#include INC_PLAT(platform.h)
+
+#include <l4/drivers/uart/pl011/pl011_uart.h>
+
+extern struct pl011_uart uart;
+
+void uart_init()
+{
+	uart.base = PL011_BASE;
+	uart.ops.initialise(&uart);
+}
+
+/* Generic uart function that lib/putchar.c expects to see implemented */
+void uart_putc(char c)
+{
+	int res;
+	/* Platform specific uart implementation */
+	do {
+		res = uart.ops.tx_char(c);
+	} while (res < 0);
+}
+