bus: TI sysc driver requires DM

This driver does not build if CONFIG_DM is disabled as it uses the
function `dev_get_priv`.

Signed-off-by: Paul Barker <paul.barker@sancloud.com>
diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig
index d742ed3..c607d24 100644
--- a/drivers/bus/Kconfig
+++ b/drivers/bus/Kconfig
@@ -13,7 +13,7 @@
 
 config TI_SYSC
 	bool "TI sysc interconnect target module driver"
-	depends on ARCH_OMAP2PLUS
+	depends on DM && ARCH_OMAP2PLUS
 	help
 	  Generic driver for Texas Instruments interconnect target module
 	  found on many TI SoCs.