plutonium: Rename plutonium project to msm8994

Rename plutonium to msm8994

Change-Id: I113e1787f831c96109ef0f138299eefe098231a2
diff --git a/project/plutonium.mk b/project/msm8994.mk
similarity index 100%
rename from project/plutonium.mk
rename to project/msm8994.mk