elgin-rv1108: Use rk_board_late_init() for GPIO settings

Since commit 8e9a8d0d0c ("rockchip: elgin-rv1108: use board_early_init_f
for per-boar init") the function that configure the board GPIOs is no
longer called since CONFIG_BOARD_EARLY_INIT_F=y is not selected.

These GPIOs do not need to be configured in such early stagem, so change it
to rk_board_late_init() and also select CONFIG_BOARD_LATE_INIT=y
to fix the regression.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Fabio Berton <fabio.berton@ossystems.com.br>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

board/elgin/elgin_rv1108/elgin_rv1108.c

@@ -49,7 +49,7 @@ int mach_cpu_init(void)
 
 #define MODEM_ENABLE_GPIO 111
 
-int board_early_init_f(void)
+int rk_board_late_init(void)
 {
 	gpio_request(MODEM_ENABLE_GPIO, "modem_enable");
 	gpio_direction_output(MODEM_ENABLE_GPIO, 0);

configs/elgin-rv1108_defconfig

@@ -10,6 +10,7 @@ CONFIG_DEBUG_UART_CLOCK=24000000
 CONFIG_DEBUG_UART=y
 # CONFIG_USE_BOOTCOMMAND is not set
 CONFIG_DEFAULT_FDT_FILE="rv1108-elgin-r1.dtb"
+CONFIG_BOARD_LATE_INIT=y
 # CONFIG_DISPLAY_CPUINFO is not set
 CONFIG_DISPLAY_BOARDINFO_LATE=y
 CONFIG_CMD_GPIO=y