chore(rdfremont): rename RD-Fremont to RD-V3

RD-Fremont is renamed to RD-V3. This change aligns with existing
products like RD-V1 and RD-V2. The update replaces all instances
of "Fremont" with "V3" in file names and contents.

Change-Id: I69595927df05876179eae0244a0c9f76e1370e5a
Signed-off-by: Jerry Wang <Jerry.Wang4@arm.com>
4 files changed