atmel: move ATMEL_MAX_UART to platform_data/atmel.h

Modify both AT91 and AVR32 platforms.
Use 7 for it as the sam9260 or the sam9g25 have 7 of them DBGU included.

Reported-by: Joachim Eastwood <[e-mail]>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <[e-mail]>
Signed-off-by: Nicolas Ferre <[e-mail]>

arch/arm/mach-at91/include/mach/hardware.h

···
 #define AT91_SRAM_MAX		SZ_1M
 #define AT91_VIRT_BASE		(AT91_IO_VIRT_BASE - AT91_SRAM_MAX)
 
-/* Serial ports */
-#define ATMEL_MAX_UART		7		/* 6 USART3's and one DBGU port (SAM9260) */
-
 /* External Memory Map */
 #define AT91_CHIPSELECT_0	0x10000000
 #define AT91_CHIPSELECT_1	0x20000000

arch/avr32/mach-at32ap/include/mach/board.h

···
 
 }
 
-#define ATMEL_MAX_UART	4
 extern struct platform_device *atmel_default_console_device;
 
 /* Flags for selecting USART extra pins */

include/linux/platform_data/atmel.h

···
 #include <linux/serial.h>
 #include <linux/platform_data/macb.h>
 
+/*
+ * at91: 6 USARTs and one DBGU port (SAM9260)
+ * avr32: 4
+ */
+#define ATMEL_MAX_UART	7
+
  /* USB Device */
 struct at91_udc_data {
 	int	vbus_pin;		/* high == host powering us */