[SYCL] Fix PersistentDeviceCodeCache unittests (#6266)

#6256 changed the binary format used
by the PersistentDeviceCodeCache tests to be a parameter, however the
tests would be setting the format after the image had been initialized,
which causes the image to think it is still the old format after
changing the binary format of the PI image to the format read from the
GTest parameter. With these changes the format will be set immediately
from the parameter rather than deferring it to during setup.
Additionally it fixes the SetUp and TearDown overrides.

Signed-off-by: Larsen, Steffen <steffen.larsen@intel.com>

Author: steffenlarsen

sycl/unittests/kernel-and-program/PersistentDeviceCodeCache.cpp

@@ -120,15 +120,13 @@ class PersistentDeviceCodeCache
     SYCLCachePersistentChanged = true;
   }
 
-  virtual void SetUp() {
+  void SetUp() override {
     EXPECT_NE(getenv("SYCL_CACHE_DIR"), nullptr)
         << "Please set SYCL_CACHE_DIR environment variable pointing to cache "
            "location.";
-    // Set binary format from parameter.
-    BinStruct.Format = GetParam();
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     // If we changed the cache, set it back to the old value.
     if (SYCLCachePersistentChanged)
       SetSYCLCachePersistentEnv(SYCLCachePersistentBefore
@@ -202,10 +200,9 @@ class PersistentDeviceCodeCache
   detail::OSModuleHandle ModuleHandle = detail::OSUtil::ExeModuleHandle;
   platform Plt;
   device Dev;
-  // NOTE: Format is a parameter of the test so use none and set in SetUp.
   pi_device_binary_struct BinStruct{/*Version*/ 1,
                                     /*Kind*/ 4,
-                                    /*Format*/ PI_DEVICE_BINARY_TYPE_NONE,
+                                    /*Format*/ GetParam(),
                                     /*DeviceTargetSpec*/ nullptr,
                                     /*CompileOptions*/ nullptr,
                                     /*LinkOptions*/ nullptr,