Enable support for SMBIOS version 3.0

SMBIOS 3.2 is essentially a superset of SMBIOS 3.0. The changes from
SMBIOS 3.0 to 3.2 added new structures and fields to accommodate more
recent hardware features and capabilities, but they did not remove or
fundamentally alter any pre-existing structures from 3.0. This means
that:

- SMBIOS 3.2 remains backward-compatible with SMBIOS 3.0. Any software
  or system expecting information from SMBIOS 3.0 should still be able
  to interpret the data in SMBIOS 3.2 without issues.

Since we already support 3.2, its safe to assume that the code can also
parse the smbios table version 3.0 without any issues. Hence adding 3.0
in the list of supported versions.

Tested By:
Tested this change by sending the SMBIOS 3.0 tables from coreboot to
BMC via IPMI, and the smbios app seems to parse the data successfully
and host the dbus objects of CPU's and DIMM's.

Change-Id: I2af595ed49b7c697abb6d19331470ad17e060836
Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
diff --git a/include/smbios_mdrv2.hpp b/include/smbios_mdrv2.hpp
index 950d498..1224f1e 100644
--- a/include/smbios_mdrv2.hpp
+++ b/include/smbios_mdrv2.hpp
@@ -165,9 +165,9 @@
 
 static constexpr const char* systemSuffix = "/chassis/motherboard/bios";
 
-constexpr std::array<SMBIOSVersion, 4> supportedSMBIOSVersions{
-    SMBIOSVersion{3, 2}, SMBIOSVersion{3, 3}, SMBIOSVersion{3, 4},
-    SMBIOSVersion{3, 5}};
+constexpr std::array<SMBIOSVersion, 5> supportedSMBIOSVersions{
+    SMBIOSVersion{3, 0}, SMBIOSVersion{3, 2}, SMBIOSVersion{3, 3},
+    SMBIOSVersion{3, 4}, SMBIOSVersion{3, 5}};
 
 typedef enum
 {