syscalls: Define the syscall id's with '#define' instead of enum

We use the code generator 'gen_syscalls.py' to assign numeric
id's to each syscall. These id's have been defined using an enum
like this:

enum {
	K_SYSCALL_ADC_DISABLE,
	K_SYSCALL_ADC_ENABLE,
	K_SYSCALL_LIMIT
};

but enums can not be included by assembly files. So we have been
compiling the enum values and then extracting them into #define's when
needed.

In this situation there happen to not be any benefits of using
'enum' over #define's so we can simplify by initially defining
them with #define instead.

Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
1 file changed