Spikyrock: Modify kconfig description

BUG=b:327546783
TEST=sudo zmake build spikyrock passed

Change-Id: I4c65dd948537540fdc5b4ebc65cc1d7044ed3551
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/5500677
Reviewed-by: Ganxiang Wang <[email protected]>
Tested-by: Jiahong Wei <[email protected]>
Reviewed-by: Knox Chiou <[email protected]>
Reviewed-by: Shawn Ku <[email protected]>
Commit-Queue: Jiahong Wei <[email protected]>
Code-Coverage: Zoss <[email protected]>

Author: Jiahong Wei

zephyr/program/roach/Kconfig

@@ -22,7 +22,7 @@ config BOARD_KELPIE
 config BOARD_SPIKYROCK
 	bool "Google Spikyrock Board"
 	help
-	  Build Google Spikyrock reference board. Spikyrock is a keyboard EC
-	  using ITE it82202-ax.
+	  Build Google Spikyrock board. Spikyrock is a variant board of
+	  Roach devices.
 
 source "Kconfig.zephyr"