Convert CONFIG_BZIP2 et al to Kconfig

This converts the following to Kconfig:
   CONFIG_BZIP2
   CONFIG_GZIP
   CONFIG_LZO
   CONFIG_ZLIB
   CONFIG_LZMA
   CONFIG_LZO

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/iconnect_defconfig b/configs/iconnect_defconfig
index 4281aa9..d5a0eca 100644
--- a/configs/iconnect_defconfig
+++ b/configs/iconnect_defconfig
@@ -39,3 +39,4 @@
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_STORAGE=y
 CONFIG_LZMA=y
+CONFIG_BZIP2=y