microblaze: Add faked LL_TEMAC driver configuration

Expand the specific configuration for the microblaze-generic
board in xparameters.h with a faked setup to enable the
LL_TEMAC driver.

Note: From now the microblaze-generic board is no longer a
valid board configuration for a real piece of hardware. Rather
than, we use the file config.mk and xparameters.h as a faked
board configuration to force the compilation of all potential
driver code for Microblaze systems.

Signed-off-by: Stephan Linz <linz@li-pro.net>
diff --git a/board/xilinx/microblaze-generic/config.mk b/board/xilinx/microblaze-generic/config.mk
index f8d7e26..9fd1015 100644
--- a/board/xilinx/microblaze-generic/config.mk
+++ b/board/xilinx/microblaze-generic/config.mk
@@ -21,8 +21,10 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 # MA 02111-1307 USA
 #
-# CAUTION: This file is automatically generated by libgen.
-# Version: Xilinx EDK 6.3 EDK_Gmm.12.3
+# CAUTION: This file is a faked configuration !!!
+#          There is no real target for the microblaze-generic
+#          configuration. You have to replace this file with
+#          the generated file from your Xilinx design flow.
 #
 
 CONFIG_SYS_TEXT_BASE = 0x29000000