kernel: disable xz for 2.6.38 for now, it is unused

SVN-Revision: 26193

target/linux/generic/config-2.6.38

@@ -3011,9 +3011,10 @@ CONFIG_XFRM=y
 # CONFIG_XILINX_LL_TEMAC is not set
 # CONFIG_XIP_KERNEL is not set
 # CONFIG_XMON is not set
-CONFIG_XZ_DEC=y
+# CONFIG_XZ_DEC is not set
 # CONFIG_XZ_DEC_ARM is not set
 # CONFIG_XZ_DEC_ARMTHUMB is not set
+# CONFIG_XZ_DEC_BCJ is not set
 # CONFIG_XZ_DEC_IA64 is not set
 # CONFIG_XZ_DEC_POWERPC is not set
 # CONFIG_XZ_DEC_SPARC is not set