bloblist: Enforce CRC32

In the common bloblist code we call crc32 to get a checksum for the
data.  Ensure we will have the CRC32 code via select.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/common/Kconfig b/common/Kconfig
index d103bc6..f2dfda4 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -951,6 +951,7 @@
 
 config BLOBLIST
 	bool "Support for a bloblist"
+	select CRC32
 	help
 	  This enables support for a bloblist in U-Boot, which can be passed
 	  from TPL to SPL to U-Boot proper (and potentially to Linux). The
@@ -961,6 +962,7 @@
 config SPL_BLOBLIST
 	bool "Support for a bloblist in SPL"
 	depends on BLOBLIST && SPL_LIBGENERIC_SUPPORT && SPL_LIBCOMMON_SUPPORT
+	select SPL_CRC32
 	default y if SPL
 	help
 	  This enables a bloblist in SPL. If this is the first part of U-Boot
@@ -970,6 +972,7 @@
 config TPL_BLOBLIST
 	bool "Support for a bloblist in TPL"
 	depends on BLOBLIST && TPL_LIBGENERIC_SUPPORT && TPL_LIBCOMMON_SUPPORT
+	select TPL_CRC32
 	default y if TPL
 	help
 	  This enables a bloblist in TPL. The bloblist is set up in TPL and