[FHI72] Add Liteon FR2 support in the FHI tutorial and a reference config file

doc/ORAN_FHI7.2_Tutorial.md

@@ -565,12 +565,6 @@ dl_tuning_special_slot=0x13b6
 
 #### LITEON
 
-The OAI configuration file [`gnb.sa.band78.273prb.fhi72.4x4-liteon.conf`](../targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band78.273prb.fhi72.4x4-liteon.conf) corresponds to:
-- TDD pattern `DDDSU`, 2.5ms
-- Bandwidth 100MHz
-- MTU 1500
-- MTU 9216: v02.00.10
-
 ##### RU configuration
 
 SSH to the unit as user `user`. Write `enable` in the terminal to enter the configuration console; the password should be in the user guide. Use the command `show oru-status` to check the RU status. The output should be similar to:
@@ -593,7 +587,15 @@ Once the RU is PTP synced, and RF state and DPD are `Ready`, write `configure te
 - DU MAC address
 ...
 
-The configuration mode example:
+###### FR1
+
+The OAI configuration file [`gnb.sa.band78.273prb.fhi72.4x4-liteon.conf`](../targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band78.273prb.fhi72.4x4-liteon.conf) corresponds to:
+- TDD pattern `DDDSU`, 2.5ms
+- Bandwidth 100MHz
+- MTU 1500
+- MTU 9216: v02.00.10
+
+The RU configuration mode example:
 ```bash
 compression-bit 9 # set IQ bitwidth for PxSCH/PRACH
 eAXC_id 4 5 6 7 # set PRACH eAxC IDs
@@ -601,6 +603,21 @@ jumboframe 1 # enable jumbo frame
 ...
 ```
 
+###### FR2
+
+The OAI configuration file [`gnb.sa.band257.66prb.fhi72.2x2-liteon.conf`](../targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band257.66prb.fhi72.2x2-liteon.conf) corresponds to:
+- TDD pattern `DDDDDDDSUU`, 1.25ms
+- Bandwidth 100MHz
+- FW v02.00.07
+- DL uses jumbo frame, UL uses standard MTU of 1500 bytes
+
+The RU configuration mode example:
+```bash
+compression-bit 8 # set IQ bitwidth for PxSCH/PRACH
+eAXC_id 0 1 # set PRACH eAxC IDs
+...
+```
+
 #### VVDN LPRU
 
 **Version 3.x**