lpc32xx: remove duplicated DMA_CLK_ENABLE bit definition

Because there is an originally defined CLK_DMA_ENABLE macro in clk.h,
no reason to add another DMA_CLK_ENABLE macro with the same value.

Remove DMA_CLK_ENABLE, since it does not follow naming convention from
the code, this implies renaming of DMA_CLK_ENABLE to CLK_DMA_ENABLE in
lpc32xx/devices.c file.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Tested-by: Sylvain Lemieux <slemieux@tycoint.com>

arch/arm/cpu/arm926ejs/lpc32xx/devices.c

@@ -44,8 +44,7 @@ void lpc32xx_uart_init(unsigned int uart_id)
 void lpc32xx_dma_init(void)
 {
 	/* Enable DMA interface */
-	writel(DMA_CLK_ENABLE, &clk->dmaclk_ctrl);
-
+	writel(CLK_DMA_ENABLE, &clk->dmaclk_ctrl);
 }
 
 void lpc32xx_mac_init(void)

arch/arm/include/asm/arch-lpc32xx/clk.h

@@ -158,9 +158,6 @@ struct clk_pm_regs {
 #define CLK_NAND_SLC_SELECT		(1 << 2)
 #define CLK_NAND_MLC_INT		(1 << 5)
 
-/* DMA Clock Control Register bits */
-#define DMA_CLK_ENABLE			(1 << 0)
-
 /* SSP Clock Control Register bits */
 #define CLK_SSP0_ENABLE_CLOCK		(1 << 0)