ti_omap5_common.h: Switch to CONFIG_OMAP_SERIAL for non-SPL DM_SERIAL

Tested on J6Eco EVM
Signed-off-by: NTom Rini <trini@konsulko.com>

include/configs/ti_omap5_common.h

@@ -51,9 +51,13 @@
  * Hardware drivers
  */
 #define CONFIG_SYS_NS16550
+#if defined(CONFIG_SPL_BUILD) || !defined(CONFIG_DM_SERIAL)
 #define CONFIG_SYS_NS16550_SERIAL
 #define CONFIG_SYS_NS16550_REG_SIZE	(-4)
 #define CONFIG_SYS_NS16550_CLK		48000000
+#else
+#define CONFIG_OMAP_SERIAL
+#endif
 
 /*
  * Environment setup