bloblist: Allow custom alignment for blobs

Some blobs need a larger alignment than the default. For example, ACPI
tables often start at a 4KB boundary. Add support for this.

Update the size of the test blob to allow these larger records.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/cpu/intel_common/acpi.c b/arch/x86/cpu/intel_common/acpi.c
index a4d5fbd3..4496bbf 100644
--- a/arch/x86/cpu/intel_common/acpi.c
+++ b/arch/x86/cpu/intel_common/acpi.c
@@ -198,7 +198,7 @@
 	struct acpi_global_nvs *gnvs;
 	int ret;
 
-	ret = bloblist_ensure_size(BLOBLISTT_ACPI_GNVS, sizeof(*gnvs),
+	ret = bloblist_ensure_size(BLOBLISTT_ACPI_GNVS, sizeof(*gnvs), 0,
 				   (void **)&gnvs);
 	if (ret)
 		return log_msg_ret("bloblist", ret);