CBFS: use cbfs_get_file_content whenever possible rather than cbfs_get_file

Number one reason to use cbfs_get_file was to get file length.
With previous patch no more need for this.

Change-Id: I330dda914d800c991757c5967b11963276ba9e00
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4674
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Tested-by: build bot (Jenkins)
diff --git a/src/mainboard/samsung/lumpy/romstage.c b/src/mainboard/samsung/lumpy/romstage.c
index 6c87f88..a4f0c42 100644
--- a/src/mainboard/samsung/lumpy/romstage.c
+++ b/src/mainboard/samsung/lumpy/romstage.c
@@ -182,8 +182,8 @@
 	};
 
 	typedef const uint8_t spd_blob[256];
-	struct cbfs_file *spd_file;
 	spd_blob *spd_data;
+	size_t spd_file_len;
 
 
 	timestamp_init(get_initial_timestamp());
@@ -289,12 +289,12 @@
 		break;
 	}
 
-	spd_file = cbfs_get_file(CBFS_DEFAULT_MEDIA, "spd.bin");
-	if (!spd_file)
+	spd_data = cbfs_get_file_content(CBFS_DEFAULT_MEDIA, "spd.bin", 0xab,
+					 &spd_file_len);
+	if (!spd_data)
 		die("SPD data not found.");
-	if (spd_file->len < (spd_index + 1) * 256)
+	if (spd_file_len < (spd_index + 1) * 256)
 		die("Missing SPD data.");
-	spd_data = (spd_blob *)CBFS_SUBHEADER(spd_file);
 	// leave onboard dimm address at f0, and copy spd data there.
 	memcpy(pei_data.spd_data[0], spd_data[spd_index], 256);