cpu/ti/am335x: Move from cpu to soc in tree

The AM335X is a SoC, so should be in the soc tree.

This moves all the existing am335x code to soc/ and updates any
references. It also adds a soc.c file as required for the ramstage.

Change-Id: Ic1ccb0e9b9c24a8b211b723b5f4cc26cdd0eaaab
Signed-off-by: Sam Lewis <sam.vr.lewis@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44378
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/src/soc/ti/am335x/nand.c b/src/soc/ti/am335x/nand.c
new file mode 100644
index 0000000000..a7029a02d6
--- /dev/null
+++ b/src/soc/ti/am335x/nand.c
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <boot_device.h>
+
+const struct region_device *boot_device_ro(void)
+{
+	/* FIXME: add support for reading coreboot from NAND */
+	return NULL;
+}