Fix typo in hardware ID

[szweep]

The links created for audio support in the Asus UX3204V use an upper case 'A' in the hardware ID part of the filename, but the files are not located by the driver unless lower case letters are used. This patch just changes those upper case 'A's to 'a's.

[stuhenderson]

Thanks for sending this through Steve.
We've got a similar patch sat in review with the appropriate sign offs required to be pushed upstream, which we hope to do shortly.
Hopefully we'll see it merged in the next week or two.
Thanks,
Stu