ARM: s3c24xx: Restore proper usage of pr_info/pr_cont

Fix wrong usage of pr_info introduced by the commit e728e4f2 ("ARM:
s3c24xx: formatting cleanup in mach-mini2440.c").

Since the idea is to print on a single line, pr_cont has to be used.

Signed-off-by: Cedric Roux <sed@free.fr>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>