gallivm: Fix build with llvm-2.9.

The build fix of commit 40ae214067 does
not apply to llvm-2.9 but rather to llvm-3.0svn.

src/gallium/auxiliary/gallivm/lp_bld_debug.cpp

@@ -209,12 +209,12 @@ lp_disassemble(const void* func)
    raw_debug_ostream Out;
    TargetMachine *TM = T->createTargetMachine(Triple, "");
 
-#if HAVE_LLVM >= 0x0209
+#if HAVE_LLVM >= 0x0300
    unsigned int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
 #else
    int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
 #endif
-#if HAVE_LLVM >= 0x0209
+#if HAVE_LLVM >= 0x0300
    OwningPtr<MCInstPrinter> Printer(
          T->createMCInstPrinter(*TM, AsmPrinterVariant, *AsmInfo));
 #elif HAVE_LLVM >= 0x0208