With the current SIGDET value of 0x6E there
seems to be NOP timeouts seen frequently.
Hence, change the SIGDET value to 0x6C as per
updated Hardware Programming Guide.
Change-Id: I46426382033603c4727de6b0a485015eed690f34
Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>