[POWERPC] Remove nvram forward declarations

Forward declarations serve no purpose in this file.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>

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 arch/powerpc/kernel/nvram_64.c |    5 -----
 1 file changed, 5 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>