Wifi: Update the Latency mode API documentation

This commit updates the documentation for the HAL API setLatencyMode().
It also updates the current.txt with the IWifiChip new hash.

Bug: 124459516
Test: None
Change-Id: I018e0237807aab70f7587d5fd7517d64352140f7
diff --git a/current.txt b/current.txt
index 88d2e11..2ec77c9 100644
--- a/current.txt
+++ b/current.txt
@@ -546,7 +546,7 @@
 3bbaa8cbc5d6b1da21f5509b2b641e05fc7eeca1354751eb1bb3cf37f89aa32f android.hardware.usb@1.2::types
 92c1a726c80970d623b891f7c2f9a989a40a15ee1244092b49f4eb6adcdce4e9 android.hardware.vibrator@1.3::IVibrator
 f19832856a3f53ced5ef91d3cc630a57fb7f4d4ce15f364dbed09099b89f6830 android.hardware.wifi@1.3::IWifi
-7c6799c19bfdb3dec016b751556fe246cf7d37191ee7bb82a0091ab9fbf6f2fb android.hardware.wifi@1.3::IWifiChip
+64be084b6e1ef330b75fa916593dc0b94b0ec7a16d5cfaa5a31e6c9143c8288d android.hardware.wifi@1.3::IWifiChip
 3bef30e8b61ab050c0f6fd26572712be5ebb7707d624c9aa6c74bbb9d6a5b4a9 android.hardware.wifi@1.3::IWifiStaIface
 f3dbd8dd0d6333c005610288a4785d0ef79a72a7bbe6d0a46d46fa89fc886f1e android.hardware.wifi@1.3::types
 2fae61e962f68091335f7ff4581fcfe2e28ce7f6132d7a712fa13d7965543e4d android.hardware.wifi.hostapd@1.1::IHostapd
diff --git a/wifi/1.3/IWifiChip.hal b/wifi/1.3/IWifiChip.hal
index fc6dbac..72cee89 100644
--- a/wifi/1.3/IWifiChip.hal
+++ b/wifi/1.3/IWifiChip.hal
@@ -65,10 +65,14 @@
     /**
      * API to set the wifi latency mode
      *
-     * Latency mode determines whether or not to optimize for reducing wifi
-     * latency as a tradeoff with other wifi functionality such as scanning,
-     * roaming, etc. This optimization is suitable for some applications such
-     * as gaming and virtual reality applications.
+     * The latency mode is a hint to the HAL to enable or disable Wi-Fi latency
+     * optimization. The optimization should be enabled if the mode is set to |LOW|
+     * and should be disabled if the mode is set to |NORMAL|.
+     * Wi-Fi latency optimization may trade-off latency against other Wi-Fi
+     * functionality such as scanning, roaming, etc. but it should not result in
+     * completely halting this functionality.
+     *
+     * The low latency mode targets applications such as gaming and virtual reality.
      */
     setLatencyMode(LatencyMode mode) generates (WifiStatus status);