hexagon: time: Remove redundant null check for resource

Null check for 'resource' before assignment is unnecessary because the
variable 'resource' is initialized to NULL at the beginning of the function.

Signed-off-by: Hardevsinh Palaniya <hardevsinh.palaniya@siliconsignals.io>
Link: https://lore.kernel.org/r/20241111142458.67854-1-hardevsinh.palaniya@siliconsignals.io


Signed-off-by: Brian Cain <bcain@quicinc.com>
Signed-off-by: Brian Cain <brian.cain@oss.qualcomm.com>