Kernel: Add new generic Printer class

kprint is now just a #define to Printer::print<terminal_putc>.

This allows us to use same print formatting for serial output :)

kernel/Makefile

@@ -36,6 +36,7 @@ kernel/Keyboard.o \
 kernel/kmalloc.o \
 kernel/PIC.o \
 kernel/PIT.o \
+kernel/Serial.o \
 kernel/SSP.o \
  
 OBJS=\