Response to system GUID command is not as per the IPMI specification

[AlexanderAmelkin]

Reported by: Devender
Original Ticket: ipmitool/bugs/501

Noticed reading System GUID command is returning invalid value. IPMItool is not returing the data in the correct format.

Sytem GUID
61a39523-78f2-11e5-9862-e6402cfc3223

./ipmitool -I lanplus -H x.x.xxx.xxx -P 0penBmc -C 1 mc guid System GUID : 2cfc3223-e640-9862-e511-f2782395a361

Expected
2332fc2c40e6-6298-e511-f278-2395a361

Issue noticed is the below structure defined in *** ./include/ipmitool/ipmimc.h*** is not as per IPMI specification (Refer to section 20.8)
/* Structure follow the IPMI V.2 Rev 1.0

• See Table 20-10 /
  struct ipmi_guid_t {
  uint32_t time_low; / timestamp low field /
  uint16_t time_mid; / timestamp middle field /
  uint16_t time_hi_and_version; / timestamp high field and version number /
  uint8_t clock_seq_hi_variant;/ clock sequence high field and variant /
  uint8_t clock_seq_low; / clock sequence low field /
  uint8_t node[6]; / node */
  } ATTRIBUTE_PACKING;

As per specification the structure should have been defined as
struct ipmi_guid_t {
uint8_t node[6]; /* node /
uint8_t clock_seq_low; / clock sequence low field /
uint8_t clock_seq_hi_variant;/ clock sequence high field and variant /
uint16_t time_hi_and_version; / timestamp high field and version number /
uint16_t time_mid; / timestamp middle field /
uint32_t time_low; / timestamp low field */
} ATTRIBUTE_PACKING;