Remove internal code name of msmgold for msm8917

Remove all reference to internal code name msmgold
and replace them with msm8917, as there is an official
announcement for msm8917 SoC.

Change-Id: I92c66c0a6e9441623c41e1178a8bf03e73ba8e33
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>