src: add loader src description

- add comment where to find the various loaders src files.

Signed-off-by: Spencer Oliver <ntfreak@users.sourceforge.net>

src/target/armv4_5.c

@@ -1307,6 +1307,8 @@ int arm_checksum_memory(struct target *target,
 	uint32_t i;
 	uint32_t exit_var = 0;
 
+	/* see contib/loaders/checksum/armv4_5_crc.s for src */
+
 	static const uint32_t arm_crc_code[] = {
 		0xE1A02000,		/* mov		r2, r0 */
 		0xE3E00000,		/* mov		r0, #0xffffffff */

src/target/armv7m.c

@@ -562,6 +562,8 @@ int armv7m_checksum_memory(struct target *target,
 	struct reg_param reg_params[2];
 	int retval;
 
+	/* see contib/loaders/checksum/armv7m_crc.s for src */
+
 	static const uint16_t cortex_m3_crc_code[] = {
 		0x4602,					/* mov	r2, r0 */
 		0xF04F, 0x30FF,			/* mov	r0, #0xffffffff */

src/target/mips32.c

@@ -613,6 +613,8 @@ int mips32_checksum_memory(struct target *target, uint32_t address,
 	int retval;
 	uint32_t i;
 
+	/* see contib/loaders/checksum/mips32.s for src */
+
 	static const uint32_t mips_crc_code[] =
 	{
 		0x248C0000,		/* addiu 	$t4, $a0, 0 */