Capitalize namespacing structs

This helps to avoid name clashes when breaking up modules into packages.

src/hulk/rtc.d

@@ -6,7 +6,7 @@ module hulk.rtc;
 import hulk.cpu;
 import hulk.klog;
 
-struct rtc
+struct Rtc
 {
     private enum ubyte PORT_SELECT = 0x70u;
     private enum ubyte PORT_DATA = 0x71u;
@@ -53,7 +53,7 @@ struct rtc
 
         /* Read the current system time. */
         time t = read_rtc_time();
-        klog.writefln("System time is 20%02u-%02u-%02u %02u:%02u:%02u",
+        Klog.writefln("System time is 20%02u-%02u-%02u %02u:%02u:%02u",
                 t.year, t.month, t.day, t.hour, t.minute, t.second);
 
         /* Send EOI to enable more RTC interrupts and re-enable NMIs. */
@@ -86,7 +86,7 @@ struct rtc
         if ((count % 1024) == 0u)
         {
             seconds++;
-            klog.writefln("Seconds: %u", seconds);
+            Klog.writefln("Seconds: %u", seconds);
         }
         eoi();
     }