arm: mvebu: turris_mox: support devices with RAM > 1 GB

In order to support MOX boards with 2 GB or 4 GB RAM, we use the new
Armada-3700 generic code for memory information structures. This is done
by removing dram_init and dram_init_banksize from turris_mox.c, in order
for the generic, weak definitions to be used.

Also for boards with 4 GB RAM it is needed to increase
CONFIG_NR_DRAM_BANKS to 2 in turris_mox_defconfig.
Signed-off-by: NMarek Behún <marek.behun@nic.cz>
Reviewed-by: NStefan Roese <sr@denx.de>

board/CZ.NIC/turris_mox/turris_mox.c

@@ -43,22 +43,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-int dram_init(void)
-{
-	gd->ram_base = 0;
-	gd->ram_size = (phys_size_t)get_ram_size(0, 0x40000000);
-
-	return 0;
-}
-
-int dram_init_banksize(void)
-{
-	gd->bd->bi_dram[0].start = (phys_addr_t)0;
-	gd->bd->bi_dram[0].size = gd->ram_size;
-
-	return 0;
-}
-
 #if defined(CONFIG_OF_BOARD_FIXUP)
 int board_fix_fdt(void *blob)
 {

configs/turris_mox_defconfig

@@ -8,7 +8,7 @@ CONFIG_ENV_SIZE=0x10000
 CONFIG_ENV_SECT_SIZE=0x10000
 CONFIG_ENV_OFFSET=0x180000
 CONFIG_DM_GPIO=y
-CONFIG_NR_DRAM_BANKS=1
+CONFIG_NR_DRAM_BANKS=2
 CONFIG_DEBUG_UART_BASE=0xd0012000
 CONFIG_DEBUG_UART_CLOCK=25804800
 CONFIG_DEBUG_UART=y