added serial to list of objects + changed fb.o to ports.o

makefile

@@ -3,7 +3,7 @@ ASM=nasm
 LINK=ld
 ISO=genisoimage
 
-OBJECTS=loader.o framebuffer.o fb.o stlio.o tests.o
+OBJECTS=loader.o serial.o framebuffer.o ports.o stlio.o tests.o
 AFLAGS=-f elf32
 CFLAGS=-m32 -nostdlib -nostdinc -fno-builtin -fno-stack-protector -nostartfiles \
 		-nodefaultlibs -Wall -Wextra -Werror -c