Move STM32 examples to examples/stm32 subdir.

Makefile

@@ -41,7 +41,7 @@ lib:
 
 examples: lib
 	@printf "  BUILD   examples\n"
-	$(Q)$(MAKE) -C examples all
+	$(Q)$(MAKE) -C examples/stm32 all
 
 install: build
 	@printf "  INSTALL headers\n"
@@ -57,7 +57,7 @@ install: build
 	$(Q)$(INSTALL) -m 0644 lib/*.ld $(LIBDIR)
 
 clean:
-	$(Q)$(MAKE) -C examples clean
+	$(Q)$(MAKE) -C examples/stm32 clean
 	$(Q)$(MAKE) -C lib clean
 
 .PHONY: build lib examples install clean

examples/stm32/Makefile.include

@@ -25,7 +25,7 @@ OBJCOPY		= $(PREFIX)-objcopy
 OBJDUMP		= $(PREFIX)-objdump
 # Uncomment this line if you want to use the installed (not local) library.
 # TOOLCHAIN_DIR = `dirname \`which $(CC)\``/../$(PREFIX)
-TOOLCHAIN_DIR   = ../../..
+TOOLCHAIN_DIR   = ../../../..
 CFLAGS		+= -Os -g -Wall -Wextra -I$(TOOLCHAIN_DIR)/include -fno-common \
 		   -mcpu=cortex-m3 -mthumb
 LDSCRIPT	= $(BINARY).ld