ext4: Add ext4_find_next_bit()

This function is used by the ext4 multi block allocator patches.

Also add generic_find_next_le_bit

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
diff --git a/include/asm-arm/bitops.h b/include/asm-arm/bitops.h
index 47a6b08..5c60bfc 100644
--- a/include/asm-arm/bitops.h
+++ b/include/asm-arm/bitops.h
@@ -310,6 +310,8 @@
 		_find_first_zero_bit_le(p,sz)
 #define ext2_find_next_zero_bit(p,sz,off)	\
 		_find_next_zero_bit_le(p,sz,off)
+#define ext2_find_next_bit(p, sz, off) \
+		_find_next_bit_le(p, sz, off)
 
 /*
  * Minix is defined to use little-endian byte ordering.