riscv: Call spl_board_init_f() in the generic SPL board_init_f()

The generic SPL version of board_init_f() should give a call to
board specific codes to initialize board in the SPL phase.
Signed-off-by: NBin Meng <bin.meng@windriver.com>
Reviewed-by: NRick Chen <rick@andestech.com>
Reviewed-by: NPragnesh Patel <pragnesh.patel@sifive.com>
Tested-by: NPragnesh Patel <pragnesh.patel@sifive.com>

arch/riscv/include/asm/spl.h

@@ -28,4 +28,11 @@ enum {
 	BOOT_DEVICE_NONE
 };
 
+/**
+ * spl_board_init_f() - initialize board in the SPL phase
+ *
+ * @return 0 if succeeded, -ve on error
+ */
+int spl_board_init_f(void);
+
 #endif

arch/riscv/lib/spl.c

@@ -13,6 +13,11 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+__weak int spl_board_init_f(void)
+{
+	return 0;
+}
+
 __weak void board_init_f(ulong dummy)
 {
 	int ret;
@@ -24,6 +29,10 @@ __weak void board_init_f(ulong dummy)
 	arch_cpu_init_dm();
 
 	preloader_console_init();
+
+	ret = spl_board_init_f();
+	if (ret)
+		panic("spl_board_init_f() failed: %d\n", ret);
 }
 
 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)