staging: r8188eu: Correct missing or extra space in the statements

Properly spacing out code statements/instructions improves code
readability. Add missing or remove extra space as necessary according
to the Linux Kernel coding-style guidelines. Following errors reported
by checkpatch script for inconsistent code spacing:
	ERROR: space prohibited before that close parenthesis ')'
	ERROR: space prohibited before that ',' (ctx:WxW)
	CHECK: spaces preferred around that '&' (ctx:VxV)

Signed-off-by: Deepak R Varma <drv@mailo.com>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Link: https://lore.kernel.org/r/4559d1a406b9f32379ec01cfadacea13a11803ac.1666299151.git.drv@mailo.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>