Remove CRLF conversion in ramlog

[尹声凯 <yi...@xiaomi.com.INVALID>]

Hello everyone:

I submitted a PR(https://github.com/apache/nuttx/pull/8755) to remove CRLF conversion in ramlog, which is unnecessary in ramlog and causes extra overhead.
After removing the CRLF check, I will use memcpy instead of byte-by-byte copy, which will bring a large performance improvement.

Carriage returns are already discarded in libs/libc/stream/lib_syslogstream.c:152, and double checks will bring additional overhead.

Here's how long it took me to test syslog 100 times:
Original time: 1924us
Remove CRLF time: 1918us
Using memcpy time: 1094us

Let me know if you find any other issues, thanks!


Best regards,

Yin Shengkai

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