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/arch/nds32/lib/cache.c b/arch/nds32/lib/cache.c
index 3e5aa7c..2706513 100644
--- a/arch/nds32/lib/cache.c
+++ b/arch/nds32/lib/cache.c
@@ -6,7 +6,7 @@
  */
 
 #include <common.h>
-#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
+#if !(CONFIG_IS_ENABLED(SYS_ICACHE_OFF) && CONFIG_IS_ENABLED(SYS_DCACHE_OFF))
 static inline unsigned long CACHE_SET(unsigned char cache)
 {
 	if (cache == ICACHE)
@@ -38,7 +38,7 @@
 }
 #endif
 
-#ifndef CONFIG_SYS_ICACHE_OFF
+#if !CONFIG_IS_ENABLED(SYS_ICACHE_OFF)
 void invalidate_icache_all(void)
 {
 	unsigned long end, line_size;
@@ -133,7 +133,7 @@
 
 #endif
 
-#ifndef CONFIG_SYS_DCACHE_OFF
+#if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
 void dcache_wbinval_all(void)
 {
 	unsigned long end, line_size;