Add mock function to check for page fault support

Signed-off-by: Milczarek, Slawomir <slawomir.milczarek@intel.com>

Author: smilczar

shared/source/os_interface/linux/drm_neo.h

@@ -173,7 +173,7 @@ class Drm : public DriverModel {
     MOCKABLE_VIRTUAL bool registerResourceClasses();
 
     MOCKABLE_VIRTUAL void queryPageFaultSupport();
-    bool hasPageFaultSupport() const;
+    MOCKABLE_VIRTUAL bool hasPageFaultSupport() const;
 
     MOCKABLE_VIRTUAL uint32_t registerResource(ResourceClass classType, const void *data, size_t size);
     MOCKABLE_VIRTUAL void unregisterResource(uint32_t handle);

shared/source/os_interface/linux/drm_query.cpp

@@ -141,7 +141,7 @@ void Drm::queryPageFaultSupport() {
 }
 
 bool Drm::hasPageFaultSupport() const {
-    return pageFaultSupported;
+    return false;
 }
 
 } // namespace NEO

shared/test/common/libult/linux/drm_mock.h

@@ -112,6 +112,10 @@ class DrmMock : public Drm {
         queryPageFaultSupportCalled = true;
     }
 
+    bool hasPageFaultSupport() const override {
+        return pageFaultSupported;
+    }
+
     static const int mockFd = 33;
 
     bool failRetTopology = false;