[Feature][ZXW-88]merge P50 version

Only Configure: No
Affected branch: master
Affected module: unknown
Is it affected on both ZXIC and MTK: only ZXIC
Self-test: Yes
Doc Update: No

Change-Id: I34667719d9e0e7e29e8e4368848601cde0a48408
diff --git a/ap/lib/libcurl/curl-7.86.0/docs/cmdline-opts/limit-rate.d b/ap/lib/libcurl/curl-7.86.0/docs/cmdline-opts/limit-rate.d
new file mode 100755
index 0000000..0a1e4cf
--- /dev/null
+++ b/ap/lib/libcurl/curl-7.86.0/docs/cmdline-opts/limit-rate.d
@@ -0,0 +1,29 @@
+c: Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Long: limit-rate
+Arg: <speed>
+Help: Limit transfer speed to RATE
+Category: connection
+Example: --limit-rate 100K $URL
+Example: --limit-rate 1000 $URL
+Example: --limit-rate 10M $URL
+Added: 7.10
+See-also: speed-limit speed-time
+Multi: single
+---
+Specify the maximum transfer rate you want curl to use - for both downloads
+and uploads. This feature is useful if you have a limited pipe and you would like
+your transfer not to use your entire bandwidth. To make it slower than it
+otherwise would be.
+
+The given speed is measured in bytes/second, unless a suffix is appended.
+Appending 'k' or 'K' will count the number as kilobytes, 'm' or 'M' makes it
+megabytes, while 'g' or 'G' makes it gigabytes. The suffixes (k, M, G, T, P)
+are 1024 based. For example 1k is 1024. Examples: 200K, 3m and 1G.
+
+The rate limiting logic works on averaging the transfer speed to no more than
+the set threshold over a period of multiple seconds.
+
+If you also use the --speed-limit option, that option will take precedence and
+might cripple the rate-limiting slightly, to help keeping the speed-limit
+logic working.