[stm32f429i-discovery] Moved Chucks remaining examples to the correct directory.

Additionally added Chucks readme to the stm32f429i-discovery board
readme.

examples/stm32/f4/stm32f429i-discovery/sdram/Makefile

@@ -0,0 +1,25 @@
+#
+# This file is part of the libopencm3 project.
+#
+# This library is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this library.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+OBJS = console.o clock.o
+
+BINARY = sdram
+
+LDSCRIPT = ../stm32f429i-discovery.ld
+
+include ../../Makefile.include
+