pw_rpc: Update ifdef guard for assert for Andestech RISC-V GCC12.2.0

Andestech RISC-V GCC compilers continue to have a problem
with static_assert(). So, update the ifdef guard for the
new GCC12.2.0 compiler from Andestech.

Bug: b/285367496

No-Docs-Update-Reason: internal cleanups
Enhancing existing workaround for compiler limitation.

Change-Id: Icd07fb172f13170b4b48e3480916160c42b9b9bb
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/250912
Reviewed-by: Ted Pudlik <[email protected]>
Commit-Queue: Auto-Submit <[email protected]>
Docs-Not-Needed: Aneesh V <[email protected]>
Lint: Lint 🤖 <[email protected]>
Pigweed-Auto-Submit: Aneesh V <[email protected]>

pw_rpc/public/pw_rpc/internal/method_lookup.h

@@ -53,13 +53,19 @@ class MethodLookup {
   static constexpr const auto& GetMethodUnion() {
     constexpr auto method = GetMethodUnionPointer<Service>(kMethodId);
 // TODO: b/285367496 - Remove this #ifndef guard when the static assert
-// compiles correctly when using the Andestech RISC-V GCC 10.3.0 toolchain.
-#if !(defined(__riscv) && defined(__nds_v5) && (__GNUC__ == 10) && \
-      (__GNUC_MINOR__ == 3) && (__GNUC_PATCHLEVEL__ == 0))
+// compiles correctly when using the Andestech RISC-V GCC 10.3.0 and
+// 12.2.0 toolchains.
+#if !(defined(__riscv) && defined(__nds_v5) &&       \
+      (((__GNUC__ == 10) && (__GNUC_MINOR__ == 3) && \
+        (__GNUC_PATCHLEVEL__ == 0)) ||               \
+       ((__GNUC__ == 12) && (__GNUC_MINOR__ == 2) && \
+        (__GNUC_PATCHLEVEL__ == 0))))
     static_assert(method != nullptr,
                   "The selected function is not an RPC service method");
-#endif  // !(defined(__riscv) && defined(__nds_v5) && (__GNUC__ == 10)
-        // && (__GNUC_MINOR__ == 3) && (__GNUC_PATCHLEVEL__ == 0))
+#endif  // !(defined(__riscv) && defined(__nds_v5) && (((__GNUC__ == 10) &&
+        // (__GNUC_MINOR__ == 3) && (__GNUC_PATCHLEVEL__ == 0)) || ((__GNUC__ ==
+        // 12) && (__GNUC_MINOR__ == 2) && (__GNUC_PATCHLEVEL__ == 0))))
+
     return *method;
   }