sniper: Various minor cleanups, missing Kconfig configs and reorganisation

This introduces some minor cleanups, regarding aspects such as board name, code
and headers organization as well as deprecated and missing config options.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/sniper.h b/include/configs/sniper.h
index 4152ecd..171a8c4 100644
--- a/include/configs/sniper.h
+++ b/include/configs/sniper.h
@@ -61,11 +61,8 @@
  */
 
 #define CONFIG_SYS_TEXT_BASE		0x80100000
-#define CONFIG_SYS_SDRAM_BASE		OMAP34XX_SDRC_CS0
-#define CONFIG_SYS_INIT_RAM_ADDR	0x4020F800
-#define CONFIG_SYS_INIT_RAM_SIZE	0x800
-#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_INIT_RAM_ADDR + \
-					 CONFIG_SYS_INIT_RAM_SIZE - \
+#define CONFIG_SYS_SDRAM_BASE		0x80000000
+#define CONFIG_SYS_INIT_SP_ADDR		(NON_SECURE_SRAM_END - \
 					 GENERATED_GBL_DATA_SIZE)
 
 #define CONFIG_SYS_MALLOC_LEN		(1024 * 1024 + CONFIG_ENV_SIZE)
@@ -103,8 +100,8 @@
  * MMC
  */
 
-#define CONFIG_GENERIC_MMC
 #define CONFIG_MMC
+#define CONFIG_GENERIC_MMC
 #define CONFIG_OMAP_HSMMC
 
 #define CONFIG_CMD_MMC
@@ -183,7 +180,6 @@
  * Serial
  */
 
-
 #ifdef CONFIG_SPL_BUILD
 #define CONFIG_SYS_NS16550_SERIAL
 #define CONFIG_SYS_NS16550_REG_SIZE	(-4)
@@ -192,7 +188,6 @@
 #define CONFIG_SYS_NS16550_CLK		V_NS16550_CLK
 #define CONFIG_SYS_NS16550_COM3		OMAP34XX_UART3
 #define CONFIG_CONS_INDEX		3
-#define CONFIG_SERIAL3			3
 
 #define CONFIG_BAUDRATE			115200
 #define CONFIG_SYS_BAUDRATE_TABLE	{ 4800, 9600, 19200, 38400, 57600, \