target: Avoid compiler warnings about signed one-bit bitfields
target: Avoid compiler warnings about signed one-bit bitfields

Convert to unsigned bit fields for active I/O shutdown fields.

Signed-off-by: Bart Van Assche <89ed62d80e76c0eb24ee0d6433b48a91c2273b5e@acm.org>
Signed-off-by: Nicholas Bellinger <978acd1567d5598152161fdf8bf3ca568f950c9b@linux-iscsi.org>

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