drivers/video/pmag-ba-fb.c: improve diagnostics
drivers/video/pmag-ba-fb.c: improve diagnostics

Add error messages to the probe call.

While they may rarely trigger, they may be useful when something weird is
going on.  Also this is good style.

[5c1e68b099950c134891f0b6e179498a8ebe9cf9@linux-foundation.org: remove unneeded initialisation]
Signed-off-by: Maciej W. Rozycki <78f3a3d9d6e4d907a7d12e475d0a751d6b7e256b@linux-mips.org>
Cc: Mariusz Kozlowski <5702b3f6ed7bf13b13f30a976dbb318af82515c3@tuxland.pl>
Cc: Ralf Baechle <92f48d309cda194c8eda36aa8f9ae28c488fa208@linux-mips.org>
Cc: "Antonino A. Daplas" <be03a811842969f6b435f66cb85a30eb479a8702@pol.net>
Signed-off-by: Andrew Morton <5c1e68b099950c134891f0b6e179498a8ebe9cf9@linux-foundation.org>
Signed-off-by: Linus Torvalds <69652caca27c8b940640ad396ab71f93cacec34f@linux-foundation.org>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas