refactor code with new formatting rules

Functions now break before their brace, mirroring the Linux kernel.
The reason for this is that breaking the parameter list otherwise makes
code unreadable.

test/main.c

@@ -6,7 +6,8 @@
 #include "test.h"
 #include "test_conf.h"
 
-int main(void) {
+int main(void)
+{
 	assert_true(-3 >> 5 == -1); // checking for arithmetic shift, rather than logical shift
 	assert_true(sizeof(u8) == 1);
 	assert_true(sizeof(u16) == 2);