CVE-2024-43824 PCI: endpoint: pci-epf-test: Make use of cached 'epc_features' in pci_epf_test_core_init()

In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: pci-epf-test: Make use of cached 'epcfeatures' in pciepftestcoreinit Instead of getting the epcfeatures from pciepcgetfeatures API, use the cached pciepftest::epcfeatures value to avoid the NULL check. Since the NU...