xtensa: mmu: Fix partition permission definitions

Fix K_MEM_PARTITION_P_RX_U_RX definition to allow code execution from
userspace. Add K_MEM_PARTITION_P_RX_U_NA definition that allows code
execution only by kernel.

Signed-off-by: Adrian Warecki <[email protected]>

Author: softwarecki

include/zephyr/arch/xtensa/xtensa_mmu.h

@@ -63,8 +63,10 @@ typedef uint32_t k_mem_partition_attr_t;
 	((k_mem_partition_attr_t) {0})
 
 /* Execution-allowed attributes */
-#define K_MEM_PARTITION_P_RX_U_RX \
+#define K_MEM_PARTITION_P_RX_U_NA \
 	((k_mem_partition_attr_t) {XTENSA_MMU_PERM_X})
+#define K_MEM_PARTITION_P_RX_U_RX \
+	((k_mem_partition_attr_t) {XTENSA_MMU_PERM_X | XTENSA_MMU_MAP_USER})
 
 /**
  * @}