Make HAL report keyboard present during boot

Detail:
  Given the complexity of the USB system on the BCM2835, it seems unlikely
  that the HAL keyboard scan will ever be implemented. Not only does this
  mean it doesn't honour any of the CMOS reset or monitor configuration keys,
  but it means the kernel will always attempt to boot the configured
  filing system and drive, irrespective of the *Configure [No]Boot setting,
  after printing "No keyboard present - autobooting". By changing the HAL
  to report a keyboard present but with no keys held down, we at least get
  the [No]Boot option honoured again (even if the Shift key can't be used
  to invert its sense), and have the message suppressed.
Admin:
  Tested on a Raspberry Pi.

Version 0.33. Tagged as 'BCM2835-0_33'

VersionASM

@@ -11,13 +11,13 @@
                         GBLS    Module_HelpVersion
                         GBLS    Module_ComponentName
                         GBLS    Module_ComponentPath
-Module_MajorVersion     SETS    "0.32"
-Module_Version          SETA    32
+Module_MajorVersion     SETS    "0.33"
+Module_Version          SETA    33
 Module_MinorVersion     SETS    ""
-Module_Date             SETS    "13 Apr 2014"
-Module_ApplicationDate  SETS    "13-Apr-14"
+Module_Date             SETS    "29 Apr 2014"
+Module_ApplicationDate  SETS    "29-Apr-14"
 Module_ComponentName    SETS    "BCM2835"
 Module_ComponentPath    SETS    "mixed/RiscOS/Sources/HAL/BCM2835"
-Module_FullVersion      SETS    "0.32"
-Module_HelpVersion      SETS    "0.32 (13 Apr 2014)"
+Module_FullVersion      SETS    "0.33"
+Module_HelpVersion      SETS    "0.33 (29 Apr 2014)"
                         END

VersionNum

-/* (0.32)
+/* (0.33)
  *
  * This file is automatically maintained by srccommit, do not edit manually.
  * Last processed by srccommit version: 1.1.
  *
  */
-#define Module_MajorVersion_CMHG        0.32
+#define Module_MajorVersion_CMHG        0.33
 #define Module_MinorVersion_CMHG        
-#define Module_Date_CMHG                13 Apr 2014
+#define Module_Date_CMHG                29 Apr 2014
 
-#define Module_MajorVersion             "0.32"
-#define Module_Version                  32
+#define Module_MajorVersion             "0.33"
+#define Module_Version                  33
 #define Module_MinorVersion             ""
-#define Module_Date                     "13 Apr 2014"
+#define Module_Date                     "29 Apr 2014"
 
-#define Module_ApplicationDate          "13-Apr-14"
+#define Module_ApplicationDate          "29-Apr-14"
 
 #define Module_ComponentName            "BCM2835"
 #define Module_ComponentPath            "mixed/RiscOS/Sources/HAL/BCM2835"
 
-#define Module_FullVersion              "0.32"
-#define Module_HelpVersion              "0.32 (13 Apr 2014)"
-#define Module_LibraryVersionInfo       "0:32"
+#define Module_FullVersion              "0.33"
+#define Module_HelpVersion              "0.33 (29 Apr 2014)"
+#define Module_LibraryVersionInfo       "0:33"

s/Stubs

@@ -62,7 +62,7 @@ HAL_KbdScanSetup
 
 HAL_KbdScan
         HALStub "HAL_KbdScan"
-        MOV     a1,#KbdFlag_Done   ; signal keyboard scan complete
+        MOV     a1,#KbdFlag_Present :OR: KbdFlag_Done   ; signal keyboard scan complete
         MOV     pc,lr
 
 HAL_KbdScanFinish