RAMDUMP PROTOCOL :
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HOST  ------------> TARGET
HOST  <-----------  TARGET

1. TARGET will be waiting for Handshake string from HOST application.
2. HOST will send handshake string to TARGET.
3. TARGET will receive handshake string.
4. TARGET will check if the handshake string is the expected one,
	if success, TARGET will send character 'A' as acknowledge.
	if failure, TARGET will send character 'N' as negative acknowlede.
5. TARGET will send 4 bytes holding RAMDUMP start address.
6. HOST will receive 4 bytes RAMDUMP start address.
7. TARGET will send 4 bytes holding RAMDUMP size.
8. HOST will receive 4 bytes RAMDUMP size.
9. TARGET will send RAMDUMP size bytes in a loop.
10. HOST will receive RAMDUMP size bytes in a loop untill all "size" bytes received.

Note :
Handshake string is "RAMDUMP".
