ti_omap3_common: Add CONFIG_SYS_NS16550_COMx entries

Several boards do not use the default UART3, so they do a check
for ifdef CONFIG_SPL_BUILD and enable the pointer for
CONFIG_SYS_NS16550_COMx to point to OMAP34XX_UARTx.

Let's consoldate this all into one place, and remove them from the
individual boards.

Signed-off-by: Adam Ford <aford173@gmail.com>

include/configs/omap3_cairo.h

@@ -203,8 +203,6 @@
  * function per_clocks_enable().
  */
 #ifdef CONFIG_SPL_BUILD
-#undef CONFIG_SYS_NS16550_COM3
-#define CONFIG_SYS_NS16550_COM2		OMAP34XX_UART2
 #undef CONFIG_SERIAL3
 #define CONFIG_SERIAL2
 #endif

include/configs/omap3_logic.h

@@ -16,12 +16,6 @@
 
 #include <configs/ti_omap3_common.h>
 
-#ifdef CONFIG_SPL_BUILD
-/* select serial console configuration for SPL */
-#define CONFIG_SYS_NS16550_COM1                OMAP34XX_UART1
-#endif
-
-
 /*
  * We are only ever GP parts and will utilize all of the "downloaded image"
  * area in SRAM which starts at 0x40200000 and ends at 0x4020FFFF (64KB) in

include/configs/ti_omap3_common.h

@@ -38,6 +38,8 @@
 
 /* Select serial console configuration */
 #ifdef CONFIG_SPL_BUILD
+#define CONFIG_SYS_NS16550_COM1		OMAP34XX_UART1
+#define CONFIG_SYS_NS16550_COM2		OMAP34XX_UART2
 #define CONFIG_SYS_NS16550_COM3		OMAP34XX_UART3
 #define CONFIG_SERIAL3			3
 #endif