Added a function that clears the keyboard buffer.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9958 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kernel/boot/platform/bios_ia32/keyboard.cpp

@@ -33,6 +33,14 @@ check_for_key(void)
 }
 
 
+extern "C" void
+clear_key_buffer(void)
+{
+	while (check_for_key() != 0)
+		;
+}
+
+
 extern "C" union key
 wait_for_key(void)
 {

src/kernel/boot/platform/bios_ia32/keyboard.h

@@ -26,6 +26,7 @@ union key {
 extern "C" {
 #endif
 
+extern void clear_key_buffer(void);
 extern union key wait_for_key(void);
 extern uint32 check_for_boot_keys(void);