package/pkg-kconfig: quote HOSTCC_NOCCACHE

HOSTCC may contain spaces, so needs to be quoted.

Most of the places where it is already quoted use double-quotes, so we
use that.

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>