Adding p9a_get/put_mmio and explorer_inband

p9a_get/put_mmio implements getMMIO and putMMIO via
the ADU.

explorer_inband implements functions to access MSCC
MMIO registers, MSCC RAM space for commands and
responses, and IBM scom registers via inband/mmio
to Explorer.

Change-Id: I7b0213b1cb426b10f2902e06373295986e01cd9b
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/65569
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: STEPHEN GLANCY <sglancy@us.ibm.com>
Reviewed-by: Louis Stermole <stermole@us.ibm.com>
Reviewed-by: Matt K. Light <mklight@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/80967
Reviewed-by: RAJA DAS <rajadas2@in.ibm.com>

src/import/chips/ocmb/explorer/procedures/hwp/memory/lib/shared/exp_consts.H

@@ -40,8 +40,6 @@ namespace mss
 {
 namespace exp
 {
-namespace i2c
-{
 
 ///
 /// @brief explorer ffdc codes
@@ -50,8 +48,12 @@ enum ffdc_codes
 {
     EXP_I2C_GET_FIELD = 0x0000,
     EXP_I2C_SET_FIELD = 0x0001,
+    READ_HOST_FW_RESPONSE_STRUCT = 0x0003,
 };
 
+namespace i2c
+{
+
 /// @brief List of explorer I2C commands
 ///
 enum cmd_id : uint8_t
@@ -119,7 +121,6 @@ enum boot_stages
     FW_UPGRADE_MODE = 0x02,
     RUNTIME_FW      = 0x03,
 };
-
 }// i2c
 }// exp
 }// mss