[RFC PATCH 4/8] cx25821: fix compiler warnings.

From: Hans Verkuil media_build/v4l/cx25821-core.c: In function 'cx_i2c_read_print': media_build/v4l/cx25821-core.c:386:6: warning: variable 'value' set but not used [-Wunused-but-set-variable] media_build/v4l/cx25821-core.c: In function 'cx25821_dev_setup': media_build/v4l/cx25821-core.c:899:6:

[RFC PATCH 4/8] cx25821: fix compiler warnings.

media_build/v4l/cx25821-core.c: In function 'cx_i2c_read_print': media_build/v4l/cx25821-core.c:386:6: warning: variable 'value' set but not used [-Wunused-but-set-variable] media_build/v4l/cx25821-core.c: In function 'cx25821_dev_setup': media_build/v4l/cx25821-core.c:899:6: warning: variable 'io