Fix __KernelUmdActivate()

[dbz400]

When sceKernelGetCompiledSdkVersion() != 0 , sdkVersion set and PSP_UMD_READY will be |= to notifyArg and return as 0x32 instead of 0x22 .

Fixes #4969 & #4546

Thanks @daniel229 for finding out this fix.

[unknownbrackets]

In other places, sceKernelGetCompiledSdkVersion() is used, instead of externing. Anyway, this extern is in the wrong place, and since it's suffixed by an underscore just looks wrong.

I still think it's probably a good idea to do some actual tests.

-[Unknown]

[dbz400]

Done .

[unknownbrackets]

You have "return as 0x32 as real PSP do". Does that mean you did tests with a real PSP? I notice the other one doesn't say that a real PSP does that, even though I'm pretty sure that one is confirmed to be done by a real PSP. The comments seem confusing.

-[Unknown]

[unknownbrackets]

I'm not sure the "// return as 0x22" comments are useful, but I did do a test and the behavior here does differ by sdk version, even for "1". I found a different bug meanwhile, and other behavior that differs by sdk version.

-[Unknown]

[dbz400]

Alright .I removed the comment .

[dbz400]

Not too sure if this going to merge though it did fix #4969 & #4546, referencing JPCSP there by their PSP test

https://code.google.com/p/jpcsp/source/browse/trunk/src/jpcsp/HLE/modules150/sceUmdUser.java#214

    if (iso != null) {
            notifyArg = PSP_UMD_PRESENT | PSP_UMD_READABLE;
            // The PSP is returning 0x32 instead of 0x22 when
            //     sceKernelSetCompiledSdkVersion()
            // has been called (i.e. when sceKernelGetCompiledSdkVersion() != 0).
            if (Modules.SysMemUserForUserModule.hleKernelGetCompiledSdkVersion() != 0) {
                    notifyArg |= PSP_UMD_READY;
            }

[unknownbrackets]

This does seem to happen but may need to be rebased after all.

-[Unknown]

[dbz400]

I purged my old reposityory and cannot rebase .Will do a pull .