dts: fix MULTI_DTB_FIT compression choice prompt

This choice is not about SPL for which we have a separate choice.

Fixes: 95f4bbd5 ("lib: fdt: Allow LZO and GZIP DT compression in U-Boot")
Cc: Marek Vasut <marek.vasut+renesas@gmail.com>
Signed-off-by: NBaruch Siach <baruch@tkos.co.il>

dts/Kconfig

@@ -131,7 +131,7 @@ config OF_LIST
 	  separated by <space>.
 
 choice
-	prompt "SPL OF LIST compression"
+	prompt "OF LIST compression"
 	depends on MULTI_DTB_FIT
 	default MULTI_DTB_FIT_NO_COMPRESSION