test/flash_copy: Configure MTD device to avoid undefined behaviour

Otherwise we observe invalid memory accesses due to uninitialised
variables.

Change-Id: I8b9063ccc9a25b225a562ebe120f2a99a28788ca
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>

test/Makefile.am.include

@@ -4,7 +4,8 @@ test_flash_copy_SOURCES = \
 	%reldir%/flash_copy.c \
 	flash.c \
 	common.c mtd.c \
-	%reldir%/tmpf.c
+	%reldir%/tmpf.c \
+	%reldir%/system.c
 
 test_flash_erase_SOURCES = \
 	%reldir%/flash_erase.c \

test/flash_copy.c

@@ -13,6 +13,7 @@
 #include "mboxd.h"
 #include "flash.h"
 
+#include "test/system.h"
 #include "test/tmpf.h"
 
 #define TEST_SIZE 4096
@@ -26,7 +27,7 @@ void cleanup(void)
 
 int main(void)
 {
-	struct mbox_context context;
+	struct mbox_context context = {0};
 	ssize_t processed;
 	int rand_fd;
 	char *src;
@@ -35,6 +36,8 @@ int main(void)
 
 	atexit(cleanup);
 
+	system_set_mtd_sizes(TEST_SIZE, TEST_SIZE);
+
 	mbox_vlog = &mbox_log_console;
 
 	src = malloc(TEST_SIZE);