Rename gn options to skgpu_v1 and skgpu_v2

Bug: skia:11837
Change-Id: Ie9221d2cd8e42bebb6a8a9a8ef51ba4a488ce6ca
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/424036
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
diff --git a/gn/tests.gni b/gn/tests.gni
index 402b60c..c793732 100644
--- a/gn/tests.gni
+++ b/gn/tests.gni
@@ -424,9 +424,9 @@
   "$_tests/WangsFormulaTest.cpp",
 ]
 
-oga_tests_sources = [
+skgpu_v1_tests_sources = [
   "$_tests/GrClipStackTest.cpp",
   "$_tests/PathRendererCacheTests.cpp",
 ]
 
-tests_sources += oga_tests_sources
+tests_sources += skgpu_v1_tests_sources