Fix stuff that was bugging me about the way I did it at first.
While messing around I found RDS code wasn't masking its GPIO
ISR as it should, which might lead to two different interrupts
messing with the static data.
Change-Id: I54626809ea3039a842af0cc9e3e42853326c4193
Implement scanning as binary tree in array.
Make the ADC calls fewer without compromising read quality.
Declare the thread function as 'noreturn' to save some stack. Reduce
stack size (regardless, % use is now a bit lower).
Change-Id: I239792fd2a0a2c019d1ec4af1d6d4b466cdf0ef5
Dispense with "pmic" thread and process PMIC events directly within ISR. Add
sense bit reading as part of the handling.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31528 a1c6a512-1295-4272-9138-f99709370657
