[SPARC32]: Remove superfluous 'kernel_end' alignment on sun4c.

In sun4c_init_clean_mmu(), aligning 'kernel_end' using
SUN4C_REAL_PGDIR_ALIGN() is unnecessary since the caller
does this already.

In sun4c_paging_init(), 4 page sizes of "fluff" were added
to the address of &end.  This was necessary a long time ago
when sparc32 would allocate some early data structures
by carving out memory chunks after &end but that no longer
occurs.
Signed-off-by: NMark Fortescue <mark@mtfhpc.demon.co.uk>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

arch/sparc/mm/sun4c.c

@@ -268,7 +268,6 @@ static inline void sun4c_init_clean_mmu(unsigned long kernel_end)
 	unsigned char savectx, ctx;
 
 	savectx = sun4c_get_context();
-	kernel_end = SUN4C_REAL_PGDIR_ALIGN(kernel_end);
 	for (ctx = 0; ctx < num_contexts; ctx++) {
 		sun4c_set_context(ctx);
 		for (vaddr = 0; vaddr < 0x20000000; vaddr += SUN4C_REAL_PGDIR_SIZE)
@@ -2064,7 +2063,6 @@ void __init sun4c_paging_init(void)
 	unsigned long end_pfn, pages_avail;
 
 	kernel_end = (unsigned long) &end;
-	kernel_end += (SUN4C_REAL_PGDIR_SIZE * 4);
 	kernel_end = SUN4C_REAL_PGDIR_ALIGN(kernel_end);
 
 	pages_avail = 0;