linux-next: build warning after merge of the i2c tree

[Stephen Rothwell]

Hi Wolfram,

After merging the i2c tree, today's linux-next build (x86_64 allmodconfig)
produced this warning:

drivers/i2c/i2c-stub.c:18:0: warning: "DEBUG" redefined
 #define DEBUG
 ^
<command-line>:0:0: note: this is the location of the previous definition

Introduced by commit

  6c42778780c4 ("i2c: stub: use pr_fmt")

-- 
Cheers,
Stephen Rothwell