Enforce consistent naming scheme

ksort is only referred as the project name, and the register device name
should be simply 'sort'.

Author: jserv

99-sort.rules

@@ -0,0 +1 @@
+KERNEL=="sort", SUBSYSTEM=="sort", MODE="0777"

Makefile

@@ -1,7 +1,7 @@
-obj-m += ksort.o
-ksort-objs := \
+obj-m += sort.o
+sort-objs := \
     sort_mod.o \
-    sort.o
+    sort_impl.o
 
 obj-m += xoro.o
 xoro-objs := \
@@ -26,11 +26,11 @@ test_xoro: test_xoro.c
 	$(CC) -o $@ $^
 
 insmod: all rmmod
-	sudo insmod ksort.ko
+	sudo insmod sort.ko
 	sudo insmod xoro.ko
 
 rmmod:
-	@sudo rmmod ksort 2>/dev/null || echo
+	@sudo rmmod sort 2>/dev/null || echo
 	@sudo rmmod xoro 2>/dev/null || echo
 
 check: user test_xoro

README.md

@@ -8,6 +8,7 @@ In order to access the character device as a user you need to add a rule to
 udev with the included rules file.
 ```
 $ sudo cp 99-xoro.rules /etc/udev/rules.d/
+$ sudo cp 99-sort.rules /etc/udev/rules.d/
 $ sudo udevadm control --reload
 ```