CONFIG_SPL_SYS_[DI]CACHE_OFF: add

While converting CONFIG_SYS_[DI]CACHE_OFF to Kconfig, there are instances
where these configuration items are conditional on SPL. This commit adds SPL
variants of these configuration items, uses CONFIG_IS_ENABLED(), and updates
the configurations as required.

Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Trevor Woerner <trevor@toganlabs.com>
[trini: Make the default depend on the setting for full U-Boot, update
more zynq hardware]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/mx7ulp_evk.h b/include/configs/mx7ulp_evk.h
index 5bd6392..2af5a4f 100644
--- a/include/configs/mx7ulp_evk.h
+++ b/include/configs/mx7ulp_evk.h
@@ -167,7 +167,7 @@
 #define CONFIG_SYS_INIT_SP_ADDR \
 	(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
 
-#ifndef CONFIG_SYS_DCACHE_OFF
+#if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
 #define CONFIG_CMD_CACHE
 #endif