mac8390: Fix build breakage

commit 18c00191 ("drivers/net/mac8390.c:
Convert printk(KERN_<level> to pr_<level>(") broke the build:

| drivers/net/mac8390.c:306: error: expected ')' before 'version'

as "version" is not a string literal, but a variable.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: David S. Miller <davem@davemloft.net>