Implemented serial for basic debugging, Added MMU enable to kernel main

src/kernel/io.cpp

@@ -0,0 +1,59 @@
+#include "io.h"
+
+unsigned char inb_p(unsigned short ){
+
+}
+unsigned short inw(unsigned short ){
+
+}
+unsigned short inw_p(unsigned short ){
+
+}
+unsigned int inl(unsigned short ){
+
+}
+unsigned int inl_p(unsigned short ){
+
+}
+
+
+void outb_p(unsigned char , unsigned short ){
+
+}
+void outw(unsigned short , unsigned short ){
+
+}
+void outw_p(unsigned short , unsigned short ){
+
+}
+void outl(unsigned int , unsigned short ){
+
+}
+void outl_p(unsigned int , unsigned short ){
+
+}
+
+void insb(unsigned short , void *,
+        unsigned long ){
+
+        }
+void insw(unsigned short , void *,
+        unsigned long ){
+
+        }
+void insl(unsigned short , void *,
+        unsigned long ){
+
+        }
+void outsb(unsigned short , const void *,
+        unsigned long ){
+
+        }
+void outsw(unsigned short , const void *,
+        unsigned long ){
+
+        }
+void outsl(unsigned short , const void *,
+        unsigned long ){
+
+        }