arm: socfpga: Repair SoCrates board

This board was constantly parasiting on the CV SoCDK, so split it
into it's own separate directory. Moreover, the board config was
missing important bits, like simple-bus support in SPL, the DRAM
configuration was incorrect and the DTS was also missing the pre
reloc bits.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Cc: Dinh Nguyen <dinh.linux@gmail.com>
Cc: Jan Viktorin <viktorin@rehivetech.com>
diff --git a/board/ebv/socrates/MAINTAINERS b/board/ebv/socrates/MAINTAINERS
new file mode 100644
index 0000000..e48236f
--- /dev/null
+++ b/board/ebv/socrates/MAINTAINERS
@@ -0,0 +1,6 @@
+SOCRATES BOARD
+M:	Stefan Roese <sr@denx.de>
+S:	Maintained
+F:	board/ebv/socrates/
+F:	include/configs/socfpga_socrates.h
+F:	configs/socfpga_socrates_defconfig