mips: vocore2: fix various issues

- fix SPL image generation
- fix incorrect console output
- increase malloc_f and malloc_r space to fix LZMA decompression errors
- increase SPI flash clock

Signed-off-by: Mauro Condarelli <mc5686@mclink.it>
[squashed to one patch, fix commit subject and description]
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
diff --git a/include/configs/vocore2.h b/include/configs/vocore2.h
index 40467b7..dfdb8fc 100644
--- a/include/configs/vocore2.h
+++ b/include/configs/vocore2.h
@@ -25,6 +25,7 @@
 #define CONFIG_SPL_BSS_START_ADDR	0x80010000
 #define CONFIG_SPL_BSS_MAX_SIZE		0x10000
 #define CONFIG_SPL_MAX_SIZE		0x10000
+#define CONFIG_SPL_PAD_TO		0
 
 /* Dummy value */
 #define CONFIG_SYS_UBOOT_BASE		0
@@ -34,12 +35,13 @@
 #define CONFIG_SYS_NS16550_CLK		40000000
 #define CONFIG_SYS_NS16550_REG_SIZE	-4
 #define CONFIG_SYS_NS16550_COM3		0xb0000e00
+#define CONFIG_CONS_INDEX		3
 
 /* RAM */
 
 /* Memory usage */
 #define CONFIG_SYS_MAXARGS		64
-#define CONFIG_SYS_MALLOC_LEN		(1024 * 1024)
+#define CONFIG_SYS_MALLOC_LEN		(16 * 1024 * 1024)
 #define CONFIG_SYS_BOOTPARAMS_LEN	(128 * 1024)
 #define CONFIG_SYS_CBSIZE		512