gpio: spmi: Remove "depends on ARCH_MSM8974" from QPNP Kconfig entries

Remove the following line from gpio and spmi Kconfig files:
       depends on ARCH_MSM8974

This line is not needed because it enforces a dependency which
does not exist.  Targets other than MSM8974 support qpnp-gpio
and qpnp-int.

Change-Id: I38a6d69db5298107b09c0b84696d899ddbf9814a
Signed-off-by: David Collins <collinsd@codeaurora.org>