mips: mt76xx: gardena-smart-gateway: Misc updates to dts/config/defconfig

These misc updates include the following changes:
- Change baudrate from 57600 to 115200
- Enable MIPS_BOOT_CMDLINE_LEGACY
- Enable FIT support
- Enable ethernet support
- Enable SPI NOR and NAND support
- Change MTD_UBI_BEB_LIMIT to 22
- Enable MTD Support
- Enable GPIO support
- Enable watchdog support
- Enable bootcounter support
- Enable version variable
- Change max image size from 0x80000 to 0xa0000
- Change SYS_MALLOC_LEN to 16MiB (because of UBI/UBIFS)

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
diff --git a/include/configs/gardena-smart-gateway-mt7688.h b/include/configs/gardena-smart-gateway-mt7688.h
index 0184147..b10857a 100644
--- a/include/configs/gardena-smart-gateway-mt7688.h
+++ b/include/configs/gardena-smart-gateway-mt7688.h
@@ -30,7 +30,7 @@
 
 /* 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
 
@@ -38,7 +38,7 @@
 #define CONFIG_SYS_MONITOR_BASE		CONFIG_SYS_TEXT_BASE
 
 /* Environment settings */
-#define CONFIG_ENV_OFFSET		0x80000
+#define CONFIG_ENV_OFFSET		0xa0000
 #define CONFIG_ENV_SIZE			(64 << 10)
 #define CONFIG_ENV_SECT_SIZE		(64 << 10)
 #define CONFIG_SYS_REDUNDAND_ENVIRONMENT