[stm32f429i-discovery] Moved Chucks usart irq example to usart irq console.

Chucks irq example is more elaborate than the ported one so we keep
both.

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

@@ -0,0 +1,28 @@
+#
+# 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 = clock.o
+
+BINARY = usart_irq_console
+
+# Example showing how to generate a map file.
+LDFLAGS += -Wl,--Map=$(BINARY).map
+
+LDSCRIPT = ../stm32f4-disco.ld
+
+include ../../Makefile.include
+