Rename idt.[ch] into desc.[ch]

All descriptor related code will go there.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/x86/emulator.c b/x86/emulator.c
index 845e7a0..0486d38 100644
--- a/x86/emulator.c
+++ b/x86/emulator.c
@@ -1,7 +1,7 @@
 #include "ioram.h"
 #include "vm.h"
 #include "libcflat.h"
-#include "idt.h"
+#include "desc.h"
 
 #define memset __builtin_memset
 #define TESTDEV_IO_PORT 0xe0