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

Arm has decided to rename RD-Fremont to RD-V3 to align with its
existing product lineup, such as RD-V1, RD-V2, etc. This patch [1]
replaces all occurences of "Fremont" with "V3" in file names and
contents. This change updates the testing config name and build
config of the CI to match the above patch.

[1] https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/29845

Change-Id: I26b47f98d15542035ade5c1cddcbf28e2f309dee
Signed-off-by: Jerry Wang <Jerry.Wang4@arm.com>
diff --git a/script/tf-coverity/tf-cov-make b/script/tf-coverity/tf-cov-make
index 3f8f391..9173561 100755
--- a/script/tf-coverity/tf-cov-make
+++ b/script/tf-coverity/tf-cov-make
@@ -282,9 +282,9 @@
     PLAT_RO_XLAT_TABLES=1 all
 
 #
-# Reference Design Platform RD-Fremont
+# Reference Design Platform RD-V3
 #
-make $(common_flags) PLAT=rdfremont ${ARM_TBB_OPTIONS} COT=cca DEBUG=1 \
+make $(common_flags) PLAT=rdv3 ${ARM_TBB_OPTIONS} COT=cca DEBUG=1 \
     ENABLE_RME=1 MEASURED_BOOT=1 PLAT_MHU_VERSION=3 RMM=/dev/null \
     RME_GPT_BITLOCK_BLOCK=0 all