arm: k3: Enable instruction cache for main domain SPL

Change spl_enable_dcache so it also enable icache on SPL
initialization for the main domain part of the boot flow. This
improves bootloader booting time.

Link: https://lore.kernel.org/all/20231109140958.1093235-1-joao.goncalves@toradex.com/
Signed-off-by: Joao Paulo Goncalves <joao.goncalves@toradex.com>
Tested-by: Nishanth Menon <nm@ti.com>
diff --git a/arch/arm/mach-k3/j721e_init.c b/arch/arm/mach-k3/j721e_init.c
index 8738f91..c2976c4 100644
--- a/arch/arm/mach-k3/j721e_init.c
+++ b/arch/arm/mach-k3/j721e_init.c
@@ -286,7 +286,7 @@
 	if (ret)
 		panic("DRAM init failed: %d\n", ret);
 #endif
-	spl_enable_dcache();
+	spl_enable_cache();
 }
 
 u32 spl_mmc_boot_mode(struct mmc *mmc, const u32 boot_device)