variants/XMC4700/config: Modified analog macros.

[dineshgit411]

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Description
Compilation errors when including #include <arm_match.h> in example .ino file.
https://jirard.intra.infineon.com/browse/DESMAKERS-4110

[LinjingZhang]

all 4700 tests passes. looks good!
Please apply this change to analog pins in all board configuration.

A small suggestion: perhaps you could include a link to the Jira ticket to provide reviewers with more background information.

[dineshgit411]

all 4700 tests passes. looks good! Please apply this change to analog pins in all board configuration.

A small suggestion: perhaps you could include a link to the Jira ticket to provide reviewers with more background information.

other boards working fine without this modification.. The problem arise in xmc4700..

[LinjingZhang]

all 4700 tests passes. looks good! Please apply this change to analog pins in all board configuration.
A small suggestion: perhaps you could include a link to the Jira ticket to provide reviewers with more background information.

other boards working fine without this modification.. The problem arise in xmc4700..

After some research, I found that the xmc1x series doesn't have this issue because the m0 core doesn't have DSP, so no modification is needed.
However, my personal opinion is that we should still avoid macros like A0, A1..., which are very short and prone to causing global namespace pollution. But this is a matter of personal preference regarding clean code and has nothing to do with this bug, so I will approve it.