tpm_ioctl: fix musl for missing ioctl

tpm_ioctl.c: In function 'ioctl_to_cmd':
tpm_ioctl.c:86:26: error: '_IOC_NRSHIFT' undeclared (first use in this function)
     return ((ioctlnum >> _IOC_NRSHIFT) & _IOC_NRMASK) + 1;


Upstream-status:
Signed-off-by: Armin Kuster <akuster@mvista.com>

Index: git/src/swtpm_ioctl/tpm_ioctl.c
===================================================================
--- git.orig/src/swtpm_ioctl/tpm_ioctl.c
+++ git/src/swtpm_ioctl/tpm_ioctl.c
@@ -58,6 +58,7 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <sys/ioctl.h>
+#include <asm/ioctl.h>
 #include <getopt.h>
 #include <sys/un.h>
 #include <sys/types.h>