qcacld-3.0: Add PLD API to get wifi kobject

Add PLD API to get wifi kobject.

Change-Id: I136d3f4abec831ab05058678beb23fe2e1b05d49
CRs-Fixed: 3264204

core/pld/inc/pld_common.h

@@ -872,6 +872,14 @@ void *pld_smmu_get_mapping(struct device *dev);
 #endif
 int pld_smmu_map(struct device *dev, phys_addr_t paddr,
 		 uint32_t *iova_addr, size_t size);
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 15, 0))
+struct kobject *pld_get_wifi_kobj(struct device *dev);
+#else
+static inline struct kobject *pld_get_wifi_kobj(struct device *dev)
+{
+	return NULL;
+}
+#endif
 #ifdef CONFIG_SMMU_S1_UNMAP
 int pld_smmu_unmap(struct device *dev,
 		   uint32_t iova_addr, size_t size);