binman: Add tests binaries with binman symbols

For testing we need to build some ELF files containing binman symbols. Add
these to the Makefile and check in the binaries:

   u_boot_binman_syms - normal, valid ELF file
   u_boot_binman_syms_bad - missing the __image_copy_start symbol
   u_boot_binman_syms_size - has a binman symbol with an invalid size

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/binman/test/Makefile b/tools/binman/test/Makefile
index 217d13c..e58fc80 100644
--- a/tools/binman/test/Makefile
+++ b/tools/binman/test/Makefile
@@ -10,8 +10,12 @@
 CFLAGS := -march=i386 -m32 -nostdlib -I ../../../include
 
 LDS_UCODE := -T u_boot_ucode_ptr.lds
+LDS_BINMAN := -T u_boot_binman_syms.lds
+LDS_BINMAN_BAD := -T u_boot_binman_syms_bad.lds
 
-TARGETS = u_boot_ucode_ptr u_boot_no_ucode_ptr bss_data
+TARGETS = u_boot_ucode_ptr u_boot_no_ucode_ptr bss_data \
+	u_boot_binman_syms u_boot_binman_syms.bin u_boot_binman_syms_bad \
+	u_boot_binman_syms_size
 
 all: $(TARGETS)
 
@@ -24,6 +28,18 @@
 bss_data: CFLAGS += bss_data.lds
 bss_data: bss_data.c
 
+u_boot_binman_syms.bin: u_boot_binman_syms
+	objcopy -O binary $< -R .note.gnu.build-id $@
+
+u_boot_binman_syms: CFLAGS += $(LDS_BINMAN)
+u_boot_binman_syms: u_boot_binman_syms.c
+
+u_boot_binman_syms_bad: CFLAGS += $(LDS_BINMAN_BAD)
+u_boot_binman_syms_bad: u_boot_binman_syms_bad.c
+
+u_boot_binman_syms_size: CFLAGS += $(LDS_BINMAN)
+u_boot_binman_syms_size: u_boot_binman_syms_size.c
+
 clean:
 	rm -f $(TARGETS)