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/riscv/cpu/ax25/cache.c b/arch/riscv/cpu/ax25/cache.c
index 228fc55..cd95058 100644
--- a/arch/riscv/cpu/ax25/cache.c
+++ b/arch/riscv/cpu/ax25/cache.c
@@ -30,7 +30,7 @@
 
 void icache_enable(void)
 {
-#ifndef CONFIG_SYS_ICACHE_OFF
+#if !CONFIG_IS_ENABLED(SYS_ICACHE_OFF)
 #ifdef CONFIG_RISCV_NDS_CACHE
 	asm volatile (
 		"csrr t1, mcache_ctl\n\t"
@@ -43,7 +43,7 @@
 
 void icache_disable(void)
 {
-#ifndef CONFIG_SYS_ICACHE_OFF
+#if !CONFIG_IS_ENABLED(SYS_ICACHE_OFF)
 #ifdef CONFIG_RISCV_NDS_CACHE
 	asm volatile (
 		"fence.i\n\t"
@@ -57,7 +57,7 @@
 
 void dcache_enable(void)
 {
-#ifndef CONFIG_SYS_DCACHE_OFF
+#if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
 #ifdef CONFIG_RISCV_NDS_CACHE
 	asm volatile (
 		"csrr t1, mcache_ctl\n\t"
@@ -70,7 +70,7 @@
 
 void dcache_disable(void)
 {
-#ifndef CONFIG_SYS_DCACHE_OFF
+#if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
 #ifdef CONFIG_RISCV_NDS_CACHE
 	asm volatile (
 		"fence\n\t"