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/arch/mips/dts/vocore_vocore2.dts b/arch/mips/dts/vocore_vocore2.dts
index 3502e4b..9adf396 100644
--- a/arch/mips/dts/vocore_vocore2.dts
+++ b/arch/mips/dts/vocore_vocore2.dts
@@ -59,7 +59,7 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 		compatible = "jedec,spi-nor";
-		spi-max-frequency = <25000000>;
+		spi-max-frequency = <40000000>;
 		reg = <0>;
 	};
 };
diff --git a/configs/vocore2_defconfig b/configs/vocore2_defconfig
index 99a1143..5776aad 100644
--- a/configs/vocore2_defconfig
+++ b/configs/vocore2_defconfig
@@ -6,7 +6,7 @@
 CONFIG_ENV_OFFSET=0x04e000
 CONFIG_ENV_SECT_SIZE=0x1000
 CONFIG_SYS_BOOTCOUNT_ADDR=0xb000006c
-CONFIG_SPL_SYS_MALLOC_F_LEN=0x20000
+CONFIG_SPL_SYS_MALLOC_F_LEN=0x40000
 CONFIG_SPL=y
 CONFIG_SYS_BOOTCOUNT_SINGLEWORD=y
 CONFIG_ARCH_MTMIPS=y
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