Blackfin: dma: constify MMR pointer array

The array of pointers is never written, so constify it.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

arch/blackfin/include/asm/dma.h

@@ -116,7 +116,7 @@ void blackfin_dma_resume(void);
 *	DMA API's
 *******************************************************************************/
 extern struct dma_channel dma_ch[MAX_DMA_CHANNELS];
-extern struct dma_register *dma_io_base_addr[MAX_DMA_CHANNELS];
+extern struct dma_register * const dma_io_base_addr[MAX_DMA_CHANNELS];
 extern int channel2irq(unsigned int channel);
 
 static inline void set_dma_start_addr(unsigned int channel, unsigned long addr)

arch/blackfin/mach-bf518/dma.c

@@ -11,7 +11,7 @@
 #include <asm/blackfin.h>
 #include <asm/dma.h>
 
-struct dma_register *dma_io_base_addr[MAX_DMA_CHANNELS] = {
+struct dma_register * const dma_io_base_addr[MAX_DMA_CHANNELS] = {
 	(struct dma_register *) DMA0_NEXT_DESC_PTR,
 	(struct dma_register *) DMA1_NEXT_DESC_PTR,
 	(struct dma_register *) DMA2_NEXT_DESC_PTR,

arch/blackfin/mach-bf527/dma.c

@@ -11,7 +11,7 @@
 #include <asm/blackfin.h>
 #include <asm/dma.h>
 
-struct dma_register *dma_io_base_addr[MAX_DMA_CHANNELS] = {
+struct dma_register * const dma_io_base_addr[MAX_DMA_CHANNELS] = {
 	(struct dma_register *) DMA0_NEXT_DESC_PTR,
 	(struct dma_register *) DMA1_NEXT_DESC_PTR,
 	(struct dma_register *) DMA2_NEXT_DESC_PTR,

arch/blackfin/mach-bf533/dma.c

@@ -11,7 +11,7 @@
 #include <asm/blackfin.h>
 #include <asm/dma.h>
 
-struct dma_register *dma_io_base_addr[MAX_DMA_CHANNELS] = {
+struct dma_register * const dma_io_base_addr[MAX_DMA_CHANNELS] = {
 	(struct dma_register *) DMA0_NEXT_DESC_PTR,
 	(struct dma_register *) DMA1_NEXT_DESC_PTR,
 	(struct dma_register *) DMA2_NEXT_DESC_PTR,

arch/blackfin/mach-bf537/dma.c

@@ -11,7 +11,7 @@
 #include <asm/blackfin.h>
 #include <asm/dma.h>
 
-struct dma_register *dma_io_base_addr[MAX_DMA_CHANNELS] = {
+struct dma_register * const dma_io_base_addr[MAX_DMA_CHANNELS] = {
 	(struct dma_register *) DMA0_NEXT_DESC_PTR,
 	(struct dma_register *) DMA1_NEXT_DESC_PTR,
 	(struct dma_register *) DMA2_NEXT_DESC_PTR,

arch/blackfin/mach-bf538/dma.c

@@ -11,7 +11,7 @@
 #include <asm/blackfin.h>
 #include <asm/dma.h>
 
-struct dma_register *dma_io_base_addr[MAX_DMA_CHANNELS] = {
+struct dma_register * const dma_io_base_addr[MAX_DMA_CHANNELS] = {
 	(struct dma_register *) DMA0_NEXT_DESC_PTR,
 	(struct dma_register *) DMA1_NEXT_DESC_PTR,
 	(struct dma_register *) DMA2_NEXT_DESC_PTR,

arch/blackfin/mach-bf548/dma.c

@@ -11,7 +11,7 @@
 #include <asm/blackfin.h>
 #include <asm/dma.h>
 
-struct dma_register *dma_io_base_addr[MAX_DMA_CHANNELS] = {
+struct dma_register * const dma_io_base_addr[MAX_DMA_CHANNELS] = {
 	(struct dma_register *) DMA0_NEXT_DESC_PTR,
 	(struct dma_register *) DMA1_NEXT_DESC_PTR,
 	(struct dma_register *) DMA2_NEXT_DESC_PTR,

arch/blackfin/mach-bf561/dma.c

@@ -11,7 +11,7 @@
 #include <asm/blackfin.h>
 #include <asm/dma.h>
 
-struct dma_register *dma_io_base_addr[MAX_DMA_CHANNELS] = {
+struct dma_register * const dma_io_base_addr[MAX_DMA_CHANNELS] = {
 	(struct dma_register *) DMA1_0_NEXT_DESC_PTR,
 	(struct dma_register *) DMA1_1_NEXT_DESC_PTR,
 	(struct dma_register *) DMA1_2_NEXT_DESC_PTR,