[POWERPC] Remove ppc32's export of console_drivers

There are no in-tree uses of the export any more and in linux-next there
is a change that exports it globally which causes warnings:

WARNING: vmlinux: 'console_drivers' exported twice. Previous export was in vmlinux

and in one case (mpc85xx_defconfig) a build error:

kernel/built-in.o: In function `__crc_console_drivers':
(*ABS*+0x1eb0e6f5): multiple definition of `__crc_console_drivers'

So remove the export now.  Also, there is no longer any need to include
linux/console.h.
Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

arch/powerpc/kernel/ppc_ksyms.c

@@ -8,7 +8,6 @@
 #include <linux/screen_info.h>
 #include <linux/vt_kern.h>
 #include <linux/nvram.h>
-#include <linux/console.h>
 #include <linux/irq.h>
 #include <linux/pci.h>
 #include <linux/delay.h>
@@ -160,7 +159,6 @@ EXPORT_SYMBOL(screen_info);
 EXPORT_SYMBOL(timer_interrupt);
 EXPORT_SYMBOL(irq_desc);
 EXPORT_SYMBOL(tb_ticks_per_jiffy);
-EXPORT_SYMBOL(console_drivers);
 EXPORT_SYMBOL(cacheable_memcpy);
 #endif