board: ti: am43xx-idk: Configure the CDCE913 clock synthesizer

AM43xx-IDK boards contain the CDCE913 clock synthesizer, and their
reset crystal capacitance load value of 10pF is wrong leading into
lost packets in certain networking tests. Add DT data for this
device, and probe it from the board file to program the crystal
capacitance load value to 0pF to avoid any problems.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
diff --git a/board/ti/am43xx/board.c b/board/ti/am43xx/board.c
index 2e09cc2..f5ecf87 100644
--- a/board/ti/am43xx/board.c
+++ b/board/ti/am43xx/board.c
@@ -720,6 +720,7 @@
 
 int board_late_init(void)
 {
+	struct udevice *dev;
 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 	set_board_info_env(NULL);
 
@@ -737,6 +738,10 @@
 	if (device_okay("/ocp/omap_dwc3@483c0000"))
 		enable_usb_clocks(1);
 #endif
+
+	/* Just probe the potentially supported cdce913 device */
+	uclass_get_device(UCLASS_CLK, 0, &dev);
+
 	return 0;
 }
 #endif