Inline `_log` to avoid passing symbol argument. (#51232)
This reduces callsite code from
```julia
julia> foo(x) = log(x)
foo (generic function with 1 method)
julia> @code_native syntax=:intel debuginfo=:none foo(2.3)
.text
.file "foo"
.globl julia_foo_2627 # -- Begin function julia_foo_2627
.p2align 4, 0x90
.type julia_foo_2627,@function
julia_foo_2627: # @julia_foo_2627
; Function Signature: foo(Float64)
#DEBUG_VALUE: foo:x <- $xmm0
push rbp
mov rbp, rsp
movabs rdi, offset ".Ljl_sym#log#2632.jit"
movabs rax, offset j__log_2631
call rax
pop rbp
ret
```
to
```julia
julia> @code_native syntax=:intel debuginfo=:none foo(2.3)
.text
.file "foo"
.globl julia_foo_10446 # -- Begin function julia_foo_10446
.p2align 4, 0x90
.type julia_foo_10446,@function
julia_foo_10446: # @julia_foo_10446
; Function Signature: foo(Float64)
#DEBUG_VALUE: foo:x <- $xmm0
push rbp
mov rbp, rsp
movabs rax, offset j_log_10450
call rax
pop rbp
ret
```
Note that we no longer have
```asm
movabs rdi, offset ".Ljl_sym#log#2632.jit"`
```
saving an instruction at every call site.
