[PATCH 3.12 143/170] ACPI / EC: Remove duplicated ec_wait_ibf0() waiter

From: Lv Zheng 3.12-stable review patch. If anyone has any objections, please let me know. === commit 9b80f0f73ae1583c22325ede341c74195847618c upstream. After we've added the first command byte write into advance_transaction(), the IBF=0 waiter is duplicated with the command

[PATCH 3.12 143/170] ACPI / EC: Remove duplicated ec_wait_ibf0() waiter

From: Lv Zheng lv.zh...@intel.com 3.12-stable review patch. If anyone has any objections, please let me know. === commit 9b80f0f73ae1583c22325ede341c74195847618c upstream. After we've added the first command byte write into advance_transaction(), the IBF=0 waiter is duplicated