hw/arm/digic4: Inline digic4_board_setup_ram() function

Having the RAM creation code in a separate function is not
very helpful. Move this code directly inside the board_init()
function, this will later allow the board to have the QOM
ownership of the RAM.
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: NPhilippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: NAlistair Francis <alistair.francis@wdc.com>
Message-id: 20191021190653.9511-7-philmd@redhat.com
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

hw/arm/digic_boards.c

@@ -53,12 +53,6 @@ typedef struct DigicBoard {
     const char *rom1_def_filename;
 } DigicBoard;
 
-static void digic4_board_setup_ram(DigicBoardState *s, hwaddr ram_size)
-{
-    memory_region_allocate_system_memory(&s->ram, NULL, "ram", ram_size);
-    memory_region_add_subregion(get_system_memory(), 0, &s->ram);
-}
-
 static void digic4_board_init(DigicBoard *board)
 {
     Error *err = NULL;
@@ -72,7 +66,8 @@ static void digic4_board_init(DigicBoard *board)
         exit(1);
     }
 
-    digic4_board_setup_ram(s, board->ram_size);
+    memory_region_allocate_system_memory(&s->ram, NULL, "ram", board->ram_size);
+    memory_region_add_subregion(get_system_memory(), 0, &s->ram);
 
     if (board->add_rom0) {
         board->add_rom0(s, DIGIC4_ROM0_BASE, board->rom0_def_filename);