mmc-utils: fix mmc.h includes

Some toolchains include asm-generic/int-l64.h from their asm/types.h
file for certain 64-bit architectures. This causes a conflict between
types like this one:

asm-generic/int-l64.h:28:25: error: conflicting types for '__s64'
 typedef __signed__ long __s64;
	     ^
In file included from mmc.h:17:0,
	 from mmc_cmds.c:30:
asm-generic/int-ll64.h:29:44: note: previous declaration of '__s64' was
here
 __extension__ typedef __signed__ long long __s64;

[Ryan: added include of linux/types.h because mmc/ioctl.h does not
       include it in kernel version before 3.4]

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Ryan Barnett <rjbarnet@rockwellcollins.com>
---
 mmc.h |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/mmc.h b/mmc.h
index 9871d62..2d54ec5 100644
--- a/mmc.h
+++ b/mmc.h
@@ -14,9 +14,12 @@
  * Boston, MA 021110-1307, USA.
  */

-#include <asm-generic/int-ll64.h>
+#include <linux/types.h>
 #include <linux/mmc/ioctl.h>
 #include <stdio.h>
+#ifndef _ASM_GENERIC_INT_L64_H
+#include <asm-generic/int-ll64.h>
+#endif

 #define CHECK(expr, msg, err_stmt) { if (expr) { fprintf(stderr, msg); err_stmt; } }