SYSLINK: ipc - fixes/ additions in ducatienabler and notify_ducati driver.

This patch fixes the issues found in..
	<1> notify_ducati.c: we were not unmapping
		"driver_obj->ctrl_ptr". This is done using
		unmap_ducati_virt_mem() implemented now in
		ducatienabler.
	<2> ducatienabler.c: implemented unmap_ducati_virt_mem()
		to iounmap() the "shm_virt_addr" we get calling
		ioremap() in get_ducati_virt_mem().
	<3> ducatienabler.h: added unmap_ducati_virt_mem().
	<4> notify_ducatidriver.h: added unmap_ducati_virt_mem().
Signed-off-by: Jayan John <x00jayan@ti.com>

arch/arm/plat-omap/include/syslink/ducatienabler.h

@@ -195,6 +195,7 @@ void dbg_print_ptes(bool ashow_inv_entries, bool ashow_repeat_entries);
 int ducati_setup(void);
 void ducati_destroy(void);
 u32 get_ducati_virt_mem();
+void unmap_ducati_virt_mem(u32 shm_virt_addr);
 int ducati_mem_map(u32 va, u32 da, u32 num_bytes, u32 map_attr);
 int ducati_mem_unmap(u32 da, u32 num_bytes);
 u32 user_va2pa(struct mm_struct *mm, u32 address);

arch/arm/plat-omap/include/syslink/notify_ducatidriver.h

@@ -42,6 +42,7 @@
 
 
 extern u32 get_ducati_virt_mem();
+extern void unmap_ducati_virt_mem(u32 shm_virt_addr);
 
 /*
 *  func   notify_mbxdrv_register_event

drivers/dsp/syslink/notify_ducatidriver/notify_ducati.c

@@ -528,6 +528,7 @@ int notify_ducatidrv_delete(struct notify_driver_object **handle_ptr)
 				recv_init_status = 0x0;
 			driver_obj->ctrl_ptr->proc_ctrl[driver_obj->self_id].
 				send_init_status = 0x0;
+			unmap_ducati_virt_mem((u32) driver_obj->ctrl_ptr);
 			driver_obj->ctrl_ptr = NULL;
 		}
 

drivers/dsp/syslink/procmgr/proc4430/ducatienabler.c

@@ -823,7 +823,7 @@ void ducati_destroy(void)
 EXPORT_SYMBOL(ducati_destroy);
 
 /*============================================
- * Returns the duati virtual address for IPC shared memory
+ * Returns the ducati virtual address for IPC shared memory
  *
  */
 u32 get_ducati_virt_mem()
@@ -833,4 +833,13 @@ u32 get_ducati_virt_mem()
 }
 EXPORT_SYMBOL(get_ducati_virt_mem);
 
-
+/*============================================
+ * Unmaps the ducati virtual address for IPC shared memory
+ *
+ */
+void unmap_ducati_virt_mem(u32 shm_virt_addr)
+{
+	iounmap((unsigned int *) shm_virt_addr);
+	return;
+}
+EXPORT_SYMBOL(unmap_ducati_virt_mem);