REALTEK_RTL8195AM IPv6 build fails

[juhaylinen]

Description

Target: REALTEK_RTL8195AM
Toolchain: GCC_ARM
mbed-cli 1.5.0
Mbed OS versions 5.9.0 - 5.9.5 and master (sha f15dbf2)
Steps to reproduce:
For example, import mbed-os-example-wifi

mbed import mbed-os-example-wifi
cd mbed-os-example-wifi

Enable IPv6

"target_overrides": {
        "*": {
            "platform.stdio-convert-newlines": true,
            "lwip.ipv4-enabled": false,
            "lwip.ipv6-enabled": true
        },

Build
mbed compile -t GCC_ARM -m REALTEK_RTL8195AM

Fixed in this commit #7056 but it seems to be missing from 5.9.0 - 5.9.5

This commit #7669 brings back the "dhcps.h" and "dhcps.c" files which cause the build issue in Mbed OS master

[ ] Question
[ ] Enhancement
[X] Bug

[ciarmcom]

ARM Internal Ref: MBOTRIAGE-1534

[0xc0170]

cc @ARMmbed/team-realtek

[samchuarm]

Hi @prashantrar @M-ichae-l , can you please help address this build fail asap? Thanks

[M-ichae-l]

@samchuarm
For the #7669, It brings back the "dhcps.h" and "dhcps.c". Please ask the PR creator to remove the two files (remove empty folder also). RTL8195AM does not need the two files. Realtek team would like to review the related commit before it merged. Thank you!

[0xc0170]

Thanks @M-ichae-l . I'll revert them soon

[samchuarm]

It seems this is fixed now?