ARM: pxa: remove platform dma code

As the last pxa related driver was converted to dmaengine, it's time to
kill the legacy dma code, which is not used anymore.

This finishes the pxa dmaengine transition.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>

arch/arm/mach-pxa/devices.h

@@ -54,3 +54,4 @@ extern struct platform_device pxa3xx_device_gpio;
 extern struct platform_device pxa93x_device_gpio;
 
 void __init pxa_register_device(struct platform_device *dev, void *data);
+void __init pxa2xx_set_dmac_info(int nb_channels, int nb_requestors);

arch/arm/mach-pxa/include/mach/dma.h

@@ -17,5 +17,4 @@
 /* DMA Controller Registers Definitions */
 #define DMAC_REGS_VIRT	io_p2v(0x40000000)
 
-#include <plat/dma.h>
 #endif /* _ASM_ARCH_DMA_H */

arch/arm/mach-pxa/pxa25x.c

@@ -198,9 +198,6 @@ static int __init pxa25x_init(void)
 
 		reset_status = RCSR;
 
-		if ((ret = pxa_init_dma(IRQ_DMA, 16)))
-			return ret;
-
 		pxa25x_init_pm();
 
 		register_syscore_ops(&pxa_irq_syscore_ops);

arch/arm/mach-pxa/pxa27x.c

@@ -300,9 +300,6 @@ static int __init pxa27x_init(void)
 
 		reset_status = RCSR;
 
-		if ((ret = pxa_init_dma(IRQ_DMA, 32)))
-			return ret;
-
 		pxa27x_init_pm();
 
 		register_syscore_ops(&pxa_irq_syscore_ops);

arch/arm/mach-pxa/pxa3xx.c

@@ -438,9 +438,6 @@ static int __init pxa3xx_init(void)
 		 */
 		NDCR = (NDCR & ~NDCR_ND_ARB_EN) | NDCR_ND_ARB_CNTL;
 
-		if ((ret = pxa_init_dma(IRQ_DMA, 32)))
-			return ret;
-
 		pxa3xx_init_pm();
 
 		register_syscore_ops(&pxa_irq_syscore_ops);