mips: mt76xx: gardena-smart-gateway: Correct spelling of GARDENA

This patch changes Gardena to the correct GARDENA spelling. Also the
platform name is "GARDENA smart Gateway". This patch changes the
incorrect occurrances.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
diff --git a/arch/mips/mach-mt7620/Kconfig b/arch/mips/mach-mt7620/Kconfig
index 4ebcb4b..a983443 100644
--- a/arch/mips/mach-mt7620/Kconfig
+++ b/arch/mips/mach-mt7620/Kconfig
@@ -22,12 +22,12 @@
 	prompt "Board select"
 
 config BOARD_GARDENA_SMART_GATEWAY_MT7688
-	bool "Gardena Smart Gateway"
+	bool "GARDENA smart Gateway"
 	depends on SOC_MT7620
 	select BOARD_LATE_INIT
 	select SUPPORTS_BOOT_RAM
 	help
-	  Gardena Smart Gateway boards have a MT7688 SoC with 128 MiB of RAM
+	  GARDENA smart Gateway boards have a MT7688 SoC with 128 MiB of RAM
 	  and 8 MiB of flash (SPI NOR) and additional SPI NAND storage.
 
 config BOARD_LINKIT_SMART_7688