msm: mdss: Update panel on sequence

Enable the display_en gpio before toggling the reset gpio.
This is needed to bringup the JDI panel without breaking
the default panel.

Change-Id: I64399bf070e6ba5bf2355a1fb90bba2460e2bd92
Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>