sched.h: Fix a typo ("its")
sched.h: Fix a typo ("its")

The sentence uses the possessive pronoun, which is spelled
without an apostrophe.

Signed-off-by: Jonathan Neuschäfer <00e62bd9d941047dde4266628ac851b56b1f3fa8@gmx.net>
Cc: Jiri Kosina <f2fc8123700c95880a53d4a1576282f2ca68c4b0@kernel.org>
Cc: Peter Zijlstra <3fddac958924aef220f202ca567388ddab3f14a8@infradead.org>
LKML-Reference: <1300735487-2406-1-git-send-email-00e62bd9d941047dde4266628ac851b56b1f3fa8@gmx.net>
Signed-off-by: Ingo Molnar <9dbbbf0688fedc85ad4da37637f1a64b8c718ee2@elte.hu>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas