[d3d9] Clamp stage and type in [G,S]etTextureStageState

[K0bin]

Fixes #3271

This is what happens on the Nvidia D3D9 driver.
Dawn of Magic 2 calls SetTextureStageState with a
stage > 7 and expects that to succeed.

    HRESULT test = device->SetTextureStageState(13000, (D3DTEXTURESTAGESTATETYPE)99, D3DTTFF_COUNT1); // S_OK
    test = device->SetTextureStageState(13000, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT2); // S_OK
    test = device->SetTextureStageState(6, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT3); // S_OK
    test = device->SetTextureStageState(13001, (D3DTEXTURESTAGESTATETYPE)100, D3DTTFF_COUNT4); // S_OK
    DWORD val = 0xdeadbeef;
    test = device->GetTextureStageState(13000, D3DTSS_TEXTURETRANSFORMFLAGS, &val); // S_OK, val = D3DTTFF_COUNT2
    val = 0xdeadbeef;
    test = device->GetTextureStageState(13000, (D3DTEXTURESTAGESTATETYPE)99, &val); // S_OK, val = D3DTTFF_COUNT4
    val = 0xdeadbeef;
    test = device->GetTextureStageState(13001, (D3DTEXTURESTAGESTATETYPE)98, &val); // S_OK, val = D3DTTFF_COUNT4
    val = 0xdeadbeef;
    test = device->GetTextureStageState(8, (D3DTEXTURESTAGESTATETYPE)33, &val); // S_OK, val = D3DTTFF_COUNT4
    test = device->GetTextureStageState(7, (D3DTEXTURESTAGESTATETYPE)33, &val); // S_OK, val = D3DTTFF_COUNT4
    test = device->GetTextureStageState(7, D3DTSS_TEXTURETRANSFORMFLAGS, &val); // S_OK, val = D3DTTFF_COUNT2
    test = device->GetTextureStageState(6, D3DTSS_TEXTURETRANSFORMFLAGS, &val); // S_OK, val = D3DTTFF_COUNT3
    test = device->GetTextureStageState(3, (D3DTEXTURESTAGESTATETYPE)33, &val); // S_OK, val = D3DTTFF_DISABLE
    test = device->GetTextureStageState(3, D3DTSS_TEXTURETRANSFORMFLAGS, &val); // S_OK, val = D3DTTFF_DISABLE