Don't disable the MPU for ENET when uVisor is around

Author: meriac

features/net/FEATURE_IPV4/lwip-interface/lwip-eth/arch/TARGET_Freescale/hardware_init_MK64F12.c

@@ -37,8 +37,10 @@ void k64f_init_eth_hardware(void)
 {
     port_pin_config_t configENET = {0};
 
-    /* Disable MPU. */
+#ifndef FEATURE_UVISOR
+    /* Disable MPU only when uVisor is not around. */
     MPU->CESR &= ~MPU_CESR_VLD_MASK;
+#endif/*FEATURE_UVISOR*/
 
     CLOCK_EnableClock(kCLOCK_PortC);
     CLOCK_EnableClock(kCLOCK_PortB);