Add ATA PIO IRQ handler, documentation

Still WIP, doesn't look like IRQ handler works yet.
diff --git a/src/kernel/Jmk b/src/kernel/Jmk
index 8beb214..2e842a1 100644
--- a/src/kernel/Jmk
+++ b/src/kernel/Jmk
@@ -53,9 +53,9 @@
 			task_api.o \
 			faults.o \
 			lib(ext2) \
+			lib(ide) \
 			lib(ata_pio) \
-			lib(pci) \
-			lib(ide)
+			lib(pci)
 
 type(custom_link)