x86/boot/e820: Remove unnecessary #include <linux/ioport.h> from asm/e820/api.h

There's a completely unnecessary inclusion of linux/ioport.h near
the end of the asm/e820/api.h file.

Remove it and fix up unrelated code that learned to rely on this
spurious inclusion of a generic header.

No change in functionality.

Cc: Alex Thorlton <athorlton@sgi.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Huang, Ying <ying.huang@intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul Jackson <pj@sgi.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/include/asm/e820/api.h

@@ -46,6 +46,4 @@ static inline bool is_ISA_range(u64 start, u64 end)
 	return start >= ISA_START_ADDRESS && end <= ISA_END_ADDRESS;
 }
 
-#include <linux/ioport.h>
-
 #endif /* _ASM_E820_API_H */

arch/x86/mm/ioremap.c

@@ -9,6 +9,7 @@
 #include <linux/bootmem.h>
 #include <linux/init.h>
 #include <linux/io.h>
+#include <linux/ioport.h>
 #include <linux/slab.h>
 #include <linux/vmalloc.h>
 #include <linux/mmiotrace.h>

arch/x86/mm/pat.c

@@ -10,6 +10,7 @@
 #include <linux/seq_file.h>
 #include <linux/bootmem.h>
 #include <linux/debugfs.h>
+#include <linux/ioport.h>
 #include <linux/kernel.h>
 #include <linux/pfn_t.h>
 #include <linux/slab.h>