MFC r343443, r343446, r343448, r343452

r343443:
[mips] remove dublicate values in enable mask in nlm_usb_intr_en

PR: 230572
Submitted by: David Binderman <dcb314@hotmail.com>

r343446:
[mips] remove check that is always false (unsinged < 0)

cpuid and local cpu variable are unsigned so checking if value is less than zero
always yields false.

PR: 211088
Submitted by: David Binderman <dcb314@hotmail.com>

r343448:
[mips] Fix counter mask in jz4780 timer driver

Fix dublicate value in what is apparent copypaste mistake. The last value
in mask is supposed to be for counter 7, not counter 3.

PR: 229790
Submitted by: David Binderman <dcb314@hotmail.com>

r343452:
[mips] Fix error condition check that always evaluates to false

Use proper logical operand when checking the value of srcid

PR: 200988
Submitted by: David Binderman <dcb314@hotmail.com>