dm: soc: Introduce soc_ti_k3 driver for TI K3 SoCs

Introduce an soc_ti_k3_driver that allows identification and selection
of SoC specific data based on the JTAG ID register for device
identification, as described for AM65x[0] and J721E[1] devices.

[0] http://www.ti.com/lit/ug/spruid7e/spruid7e.pdf
[1] http://www.ti.com/lit/ug/spruil1a/spruil1a.pdf

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig
index e715dfd..864d00a 100644
--- a/drivers/soc/Kconfig
+++ b/drivers/soc/Kconfig
@@ -9,6 +9,13 @@
 	  need different parameters or quirks enabled depending on the
 	  specific device variant in use.
 
+config SOC_DEVICE_TI_K3
+	depends on SOC_DEVICE
+	bool "Enable SoC Device ID driver for TI K3 SoCs"
+	help
+	  This allows Texas Instruments Keystone 3 SoCs to identify
+	  specifics about the SoC in use.
+
 source "drivers/soc/ti/Kconfig"
 
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