Fix pin names of MIMXRT1050 I2C pins

[alrodlim]

Description

Fixed the I2C pin mappings of MIMXRT1050 to the correct I/O pads.

Pull request type

[x] Fix
[ ] Refactor
[ ] Target update
[ ] Functionality change
[ ] Breaking change

[0xc0170]

/morph build

[mbed-ci]

Build : FAILURE

Build number : 3149
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/7896/

[0xc0170]

Please review the failure (those pins used should be first defined)

[alrodlim]

I have fixed the problem by moving the I2C pins definitions after A4 and A5 are defined.

[cmonr]

@alrodlim The unit test are a new addition. The failure is being fixed in another PR, and doesn't appear to be caused by this PR.

[unsignedint]

Just FYI, I noticed the same issue with this target.. this fix LGTM 👍

[0xc0170]

/morph build

[mbed-ci]

Build : SUCCESS

Build number : 3178
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/7896/

Triggering tests

/morph test
/morph export-build
/morph mbed2-build

[mbed-ci]

Exporter Build : SUCCESS

Build number : 2777
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/7896/

[cmonr]

/morph mbed2-build

[mbed-ci]

Test : SUCCESS

Build number : 2983
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/7896/2983

[cmonr]

/morph mbed2-build