omap: Use spl_soc_init instead of spl_board_init

Both spl_board_init and spl_soc_init are available as ways to run
specific code in the SPL's board_init_r. Use the former for init
code that is specific to the SoC and leave spl_board_init available
for boards to use.

Signed-off-by: Paul Kocialkowski <paulk@sys-base.io>
Reviewed-by: Tom Rini <trini@konsulko.com>

arch/arm/Kconfig

@@ -802,7 +802,7 @@ config ARCH_OMAP2PLUS
 	bool "TI OMAP2+"
 	select CPU_V7A
 	select GPIO_EXTRA_HEADER
-	select SPL_BOARD_INIT if SPL
+	select SPL_SOC_INIT if SPL
 	select SPL_STACK_R if SPL
 	select SUPPORT_SPL
 	imply TI_SYSC if DM && OF_CONTROL

arch/arm/mach-omap2/boot-common.c

@@ -269,7 +269,7 @@ skip_ipu1:
 		debug("%s: IPU2 failed to start (%d)\n", __func__, ret);
 }
 
-void spl_board_init(void)
+void spl_soc_init(void)
 {
 	/* Prepare console output */
 	preloader_console_init();