MIPS: ath79: Increase max memory limit to 256MByte

At least QCA955x can handle up to 256MBytes.

Signed-off-by: Helmut Schaa <[e-mail]>
Cc: [e-mail]
Cc: Gabor Juhos <[e-mail]>
Cc: Helmut Schaa <[e-mail]>
Patchwork: https://patchwork.linux-mips.org/patch/8738/
Signed-off-by: Ralf Baechle <[e-mail]>

arch/mips/ath79/common.h

···
 #include <linux/types.h>
 
 #define ATH79_MEM_SIZE_MIN	(2 * 1024 * 1024)
-#define ATH79_MEM_SIZE_MAX	(128 * 1024 * 1024)
+#define ATH79_MEM_SIZE_MAX	(256 * 1024 * 1024)
 
 void ath79_clocks_init(void);
 unsigned long ath79_get_sys_clk_rate(const char *id);