staging: rtl8723bs: fix spacing around operators in rtl8723b_phycfg.c

staging: rtl8723bs: fix spacing around operators in rtl8723b_phycfg.c

Fix various spacing issues reported by checkpatch.pl to improve code
readability and conform to the Linux kernel coding style.

These changes are purely cosmetic and do not alter the functional
behavior of the driver.

Signed-off-by: Jinemon Tama <osjin83@gmail.com>
Reviewed-by: Luka Gejak <luka.gejak@linux.dev>
Link: https://patch.msgid.link/20260410014214.10684-2-osjin83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>