base-hw: coding style

Improve consistency with the other base repositories, in particular

- Indentation of class initializers
- Vertical whitespace around control-flow statements
- Preferably place control-flow statements (return, break, continue) at
  beginning of a line
- Placing the opening brace of a namespace at the end of line
- Placing the opening brace of a class at a new line
- Removing superfluous braces around single statements
- Two empty lines between methods/functions in implementation files

repos/base-hw/include/kernel/interface.h

@@ -18,8 +18,8 @@
 #include <kernel/types.h>
 #include <kernel/interface_support.h>
 
-namespace Kernel
-{
+namespace Kernel {
+
 	/**
 	 * Kernel names of the kernel calls
 	 */