mhi: devices: satellite: fix device counts management

Maximum supported channels read from device tree are stored in
an incorrect entry. Fix it so that host can initiate
connections after all required devices are probed by MHI bus.

CRs-Fixed: 2385808
Change-Id: I8239b3c56e2973d5946b2821516e4f089d5bf68e
Acked-by: Bhaumik Vasav Bhatt <bbhatt@qti.qualcomm.com>
Signed-off-by: Tony Truong <truong@codeaurora.org>