ARM: dts: msm: Change glink intent size for diag on sm6150

Modify glink intent request size for the diag channels from
1k to 16k for sm6150.

Change-Id: I0cf30896701c44b7df8480b748e20886c9a8ae71
Signed-off-by: Manoj Prabhu B <bmanoj@codeaurora.org>